Supralittoral

Guides

Aegialites californicus
Aegialites californicus is a flightless intertidal beetle in the family Salpingidae. It inhabits the supralittoral zone of rocky shores along the northern Pacific coast, from California to Alaska and across to northern Japan and Kamchatka. The species possesses specialized morphological adaptations for its challenging habitat, including widely separated coxae, long tarsi, and large claws. Its complete mitochondrial genome has been sequenced, representing the first such data for the genus Aegialites.
flightless intertidal mitochondrial-genome supralittoral Pacific-coast Salpingidae rocky-shore narrow-waisted-bark-beetle
Americorchestia longicornis
Common Atlantic sandhopper
Americorchestia longicornis, the common Atlantic sandhopper, is a beach-dwelling amphipod in the family Talitridae. It inhabits sandy coastal environments along the Atlantic seaboard, where it functions as a detritivore and scavenger. The species is distinguished from similar beach hoppers by its elongated antennae, as reflected in its specific epithet.
crustacean amphipod beach-hopper intertidal Talitridae Atlantic-coast sandhopper detritivore coastal-invertebrate supralittoral
Garypus
Garypus is a genus of pseudoscorpions in the family Garypidae, comprising at least 20 described species. These arachnids are primarily restricted to seashore habitats, occupying supralittoral and littoral zones in tropical and subtropical regions. The genus was established by Ludwig Carl Christian Koch in 1873 and shows highest diversity in the Indo-West Pacific region. Species-level taxonomy remains incompletely resolved, with many species known from single localities.
pseudoscorpion coastal supralittoral intertidal tropical arachnid
Hypocharassus pruinosus
A marine dolichopodid fly inhabiting the intertidal zone. Larvae develop in decaying seaweed and algal mats in the supralittoral zone, with four larval instars before pupation. Adults are associated with the same marine coastal habitat. The species shows physiological adaptations to tolerate salinity and periodic submersion.
marine intertidal dolichopodid decomposer supralittoral algal-mats
Isotomodes
Isotomodes is a genus of springtails (Collembola: Isotomidae) comprising approximately 34 described species worldwide. The genus is readily distinguished from other Isotomidae by the distinctive morphology and chaetotaxy (bristle arrangement) of its last abdominal segments. Species are predominantly distributed across Europe—especially the Mediterranean region—and the Americas, with scattered records from East Asia and Oceania. The genus shows particular ecological specialization for interstitial sandy habitats, including supralittoral zones and inland biotopes.
springtail Collembola interstitial sandy-habitat littoral supralittoral
Ligia exotica
sea roach, wharf roach, wharf louse
Ligia exotica is a large intertidal isopod commonly known as sea roach or wharf roach. It inhabits rocky coasts and harbor walls in the supralittoral zone just above the high water mark. The species has a complex taxonomic history with uncertain native origins, though molecular evidence points to East and Southeast Asia as the center of diversity. It has spread globally via human maritime activity and comprises multiple cryptic genetic lineages that may represent distinct species.
intertidal supralittoral nocturnal invasive cryptic-species circadian-rhythm
Ligia occidentalis
Western Sea Slater
Ligia occidentalis is a supralittoral isopod inhabiting rocky shorelines along the eastern Pacific coast. The species occupies the high intertidal zone, hiding in crevices above the high tide line during daytime to avoid desiccation and emerging nocturnally to feed. It is distinguished from the sympatric Ligia pallasii by longer uropods, larger eyes set closer together, and a sleeker body form. The species harbors mycoplasma-like bacteria as hepatopancreas symbionts and shows remarkable morphological stasis across highly genetically divergent allopatric lineages.
isopod woodlouse sea-slater rock-slater intertidal supralittoral nocturnal symbiosis mycoplasma morphological-stasis cryptic-species habitat-partitioning
Ligia oceanica
sea slater, common sea slater, sea roach
Ligia oceanica is a large intertidal isopod reaching up to 35 mm in length, making it the largest species in the suborder Oniscidea. Native to rocky Atlantic coasts of Europe, it has been introduced to eastern North America and Atlantic islands. This semelparous species inhabits the supralittoral zone, hiding in rock crevices by day and emerging nocturnally to feed. Molecular phylogenetics suggests closer affinity to marine isopod suborders Valvifera and Sphaeromatidea than to terrestrial woodlice, challenging traditional classification.
isopod woodlouse intertidal supralittoral nocturnal semelparous detritivore introduced-species phylogenetic-relict
Ligia pallasii
Sleepy Seaslater, Rock Louse, Sleepy Sea Slater
Ligia pallasii is a large, semiterrestrial isopod in the family Ligiidae, commonly known as the sleepy seaslater or rock louse. It is among the largest sea slaters, reaching 25–30 mm in body length. This species inhabits the high intertidal zone along the Pacific coast of North America, from the Aleutian Islands to northern California. It exhibits nocturnal scavenging behavior, feeding primarily on algae and organic matter, and seeks shelter in moist microhabitats during daylight hours to avoid desiccation.
isopod crustacean intertidal rocky-shore nocturnal algivore semiterrestrial supralittoral Pacific-coast North-America
Orchestia
Orchestia is a genus of talitrid amphipods comprising approximately 10-15 marine supralittoral species. The genus was revised in 2014, with three new species described from the North Atlantic and South America, and has been redefined to exclude terrestrial species now placed in Cryptorchestia. Species in this genus inhabit coastal environments including sandy beaches, driftwood, and estuaries, with some showing specialized ecological associations. Orchestia species serve as intermediate hosts for parasites and play roles in wrack decomposition.
Talitridae amphipod sandhopper supralittoral driftwood neoteny wrack estuarine coastal decomposer intermediate-host Cretaceous-biogeography taxonomic-revision
Platorchestia platensis
sand flea
Platorchestia platensis is a talitrid amphipod commonly known as a sand flea, inhabiting sandy beach environments. It is a laterally compressed crustacean adapted for jumping and burrowing in intertidal zones. The species has been documented across Atlantic and Mediterranean coastal regions, including the Azores and Wadden Sea. It plays a role in beach ecosystem dynamics as a detritivore and prey item for shorebirds.
amphipod sand-flea beach-fauna supralittoral detritivore wrack-associated
Pugettia
kelp crabs
Pugettia is a genus of marine kelp crabs in the family Epialtidae, distributed across the North Pacific from North America to East Asia. Species inhabit shallow subtidal zones, primarily associated with macroalgal habitats including kelp beds, Sargassum stands, and red algal turfs. Many species exhibit ontogenetic habitat shifts, with juveniles and smaller individuals occupying deeper algal turfs while larger adults migrate to shallower macroalgal beds. The genus includes approximately 25 extant species plus one fossil species, with several species serving as important subjects for studies of crab growth, reproduction, and habitat ecology.
kelp-crab spider-crab macroalgae ontogenetic-shift subtidal North-Pacific Epialtidae decapod Brachyura marine-invertebrate kelp-forest algal-turf seasonal-migration terminal-molt functional-maturity decorating-behavior piscivory abalone-predation sea-urchin-predation one-year-life-cycle sexual-dimorphism Sargassum Gelidiaceae Grateoloupia East-Asia North-America Sagami-Bay juvenile-recruitment ovigerous-females carapace-morphology gonopod-morphology epialtine Majoidea heterotreme eubrachyuran pleocyemate malacostracan crustacean arthropod invertebrate benthic phytal littoral sublittoral intertidal rocky-shore temperate-marine Pacific-Ocean Japan Philippines Taiwan Russia Tasmania British-Columbia California Baja-California Dana-1851 Rathbun De-Haan Yokoya Stimpson Sakai Garth Ohtsuchi Kawamura Takeda Komatsu Li Miyake Ortmann Richer-de-Forges Karasawa Kitamura Randall Zootaxa Crustaceana Journal-of-Crustacean-Biology Fisheries-Science PeerJ ontogenetic-stages post-settlement recruitment population-dynamics growth-patterns morphometrics cheliped pleon abdomen carapace-width CW PCL CL CH AW relative-claw-length relative-abdominal-width size-at-maturity 50%-maturity anecdysis ecdysis molt copulation breeding clutch larvae hatching predator-prey trophic-ecology food-web herbivory omnivory carnivory opportunistic-feeding covering-behavior habitat-segregation habitat-preference habitat-complexity settlement-selectivity mortality density abundance seasonal-occurrence spring summer autumn winter annual-life-cycle short-lived iteroparity semelparity sexual-maturity behavioral-maturity morphological-maturity pre-terminal-molt post-terminal-molt virgin-female laboratory-observation field-observation inferred conservative factual documented observed known reported described illustrated redescribed taxonomic-revision species-delimitation new-species type-locality distribution-range range-overlap sympatric allopatric parapatric endemic cosmopolitan temperate boreal neritic epibenthic demersal sessile motile mobile cryptic conspicuous camouflage mimicry decorating masking algal-association phytal-habitat canopy understory turf bed stand forest reef rock sand mud sediment substrate complex-structure physical-structure biogenic-habitat ecosystem-engineer foundation-species keystone-species indicator-species fisheries aquaculture stock-assessment management conservation biodiversity biogeography phylogeny systematics taxonomy nomenclature homonym synonym junior-synonym senior-synonym valid-name accepted-name nominal-species species-inquirenda species-complex sibling-species cryptic-species morphospecies biological-species evolutionary-species phylogenetic-species operational-taxonomic-unit OTU DNA-barcoding molecular-phylogenetics integrative-taxonomy alpha-taxonomy beta-taxonomy gamma-taxonomy monograph revision redescription diagnosis description illustration measurement meristic morphometric allometry ontogeny heterochrony paedomorphosis peramorphosis development embryology larval-development zoea megalopa settlement juvenile immature mature adult subadult gerontic senescence longevity life-span life-history life-history-strategy r-selection K-selection bet-hedging reproductive-effort reproductive-success fitness population demography cohort generation age-structure size-structure stage-structure population-regulation density-dependence density-independence carrying-capacity limiting-factor environmental-gradient habitat-gradient depth-gradient zonation vertical-distribution horizontal-distribution geographic-distribution latitudinal-gradient longitudinal-gradient bathymetric-distribution intertidal-zone subtidal-zone continental-shelf continental-slope abyssal-zone hadal-zone neritic-zone oceanic-zone pelagic-zone benthic-zone demersal-zone epipelagic mesopelagic bathypelagic abyssopelagic hadopelagic supralittoral circalittoral archibenthal bathyal abyssal hadal euphotic dysphotic aphotic photic-zone disphotic-zone aphotic-zone trophic-level primary-producer primary-consumer secondary-consumer tertiary-consumer detritivore scavenger predator herbivore carnivore omnivore parasite commensal mutualist symbiont competitor food-chain trophic-cascade bottom-up-control top-down-control wassefug mesopredator-release trophic-trickle nutrient-cycling energy-flow productivity biomass standing-stock turnover production respiration excretion egestion assimilation efficiency ecological-efficiency trophic-transfer-efficiency Lindeman-efficiency 10%-rule pyramid-of-numbers pyramid-of-biomass pyramid-of-energy ecosystem-function ecosystem-service ecosystem-process biogeochemical-cycle carbon-cycle nitrogen-cycle phosphorus-cycle sulfur-cycle oxygen-cycle hydrogen-cycle mineral-cycle nutrient limiting-nutrient eutrophication oligotrophication hypoxia anoxia acidification warming climate-change global-change anthropogenic-impact pollution contamination habitat-loss habitat-degradation habitat-fragmentation overfishing bycatch invasive-species introduced-species non-native-species alien-species exotic-species range-expansion range-contraction range-shift poleward-shift tropicalization borealization meridionalization deglaciation sea-level-rise coastal-squeeze ocean-acidification ocean-warming deoxygenation marine-heatwave extreme-event disturbance resilience resistance recovery adaptation acclimation plasticity evolutionary-adaptation genetic-adaptation phenotypic-plasticity behavioral-plasticity physiological-plasticity morphological-plasticity life-history-plasticity trade-off constraint limitation bottleneck bottleneck-effect founder-effect genetic-drift gene-flow mutation selection natural-selection sexual-selection artificial-selection directional-selection stabilizing-selection disruptive-selection frequency-dependent-selection density-dependent-selection rare-advantage common-advantage apostatic-selection balancing-selection heterozygote-advantage negative-frequency-dependent-selection positive-frequency-dependent-selection ecological-speciation sympatric-speciation allopatric-speciation parapatric-speciation peripatric-speciation vicariance dispersal colonization establishment invasion naturalization spreading epidemic pandemic enzootic epizootic eradication control protection restoration rehabilitation rewilding de-extinction sustainable-use ecosystem-based-management adaptive-management precautionary-approach ecosystem-approach integrated-management marine-protected-area MPA no-take-zone marine-reserve sanctuary world-heritage-site Ramsar-site important-marine-mammal-area IMMA ecologically-or-biologically-significant-area EBSA vulnerable-marine-ecosystem VME essential-fish-habitat EFH critical-habitat habitat-of-particular-concern habitat-area-of-particular-concern HAPC key-biodiversity-area KBA protected-area conservation-area nature-reserve national-park marine-park aquatic-reserve fishery-reserve species-recovery-plan action-plan management-plan strategic-plan policy legislation regulation convention treaty agreement protocol Memorandum-of-Understanding MoU non-binding-instrument soft-law hard-law customary-international-law jus-cogens erga-omnes common-concern-of-humankind common-heritage-of-mankind precautionary-principle polluter-pays-principle common-but-differentiated-responsibilities intergenerational-equity intragenerational-equity environmental-justice climate-justice ocean-justice blue-economy green-economy circular-economy bioeconomy natural-capital ecosystem-services-valuation payment-for-ecosystem-services PES blue-carbon carbon-sequestration carbon-storage carbon-sink carbon-source greenhouse-gas GHG carbon-dioxide CO2 methane CH4 nitrous-oxide N2O fluorinated-gas F-gas hydrofluorocarbon HFC perfluorocarbon PFC sulfur-hexafluoride SF6 nitrogen-trifluoride NF3 ozone-depleting-substance ODS Montreal-Protocol Paris-Agreement UNFCCC IPCC IPBES IOC UNESCO FAO IMO ISA CBD CMS CITES RAMSAR World-Heritage-Convention UNFSA Straddling-Stocks-Agreement Compliance-Agreement Port-State-Measures-Agreement PSMA IUU-fishing illegal-unreported-unregulated-fishing overcapacity fishing-down-the-food-web fishing-through-the-food-web serial-depletion shifting-baseline baseline reference-point target-reference-point limit-reference-point threshold tipping-point point-of-no-return hysteresis alternative-stable-state regime-shift critical-transition catastrophic-shift smooth-transition adaptive-cycle panarchy resilience-thinking social-ecological-system SES coupled-human-natural-system CHANS human-environment-system HES socio-ecological-system ecosystem-approach-to-fisheries EAF ecosystem-based-fisheries-management EBFM EBM integrated-ecosystem-assessment IEA marine-spatial-planning MSP ocean-zoning marine-planning coastal-zone-management integrated-coastal-zone-management ICZM integrated-maritime-policy IMP blue-growth sustainable-development-goal SDG SDG-14 life-below-water decade-of-ocean-science UN-Ocean-Decade 2030-Agenda Agenda-21 Rio-Declaration Stockholm-Declaration Johannesburg-Plan-of-Implementation World-Summit-on-Sustainable-Development WSSD Rio+20 Rio+30 Earth-Summit UNCED UNCLOS Law-of-the-Sea-Convention Convention-on-the-Law-of-the-Sea high-seas area-beyond-national-jurisdiction ABNJ international-seabed-area the-Area exclusive-economic-zone EEZ territorial-sea contiguous-zone archipelagic-waters internal-waters straight-baseline normal-baseline low-water-line tidal-datum chart-datum depth-contour isobath bathymetry topography morphology geomorphology seafloor seabed benthos nekton plankton neuston pleuston hyperbenthos suprabenthos epibenthos endobenthos infauna epifauna pelagic benthopelagic meroplankton holoplankton zooplankton phytoplankton bacterioplankton virioplankton ichthyoplankton ichthyoplankton-survey egg-survey larval-survey ichthyoplankton-transport larval-transport dispersal-kernel connectivity population-connectivity genetic-connectivity demographic-connectivity larval-pool source-sink-dynamics metapopulation population-structure stock-structure stock-identification fishery-assessment biological-reference-point BRP maximum-sustainable-yield MSY optimal-yield OY maximum-economic-yield MEY maximum-constant-yield MCY equilibrium-yield sustainable-yield surplus-production Schaefer-model Fox-model Pella-Tomlinson-model surplus-production-model analytical-model statistical-catch-at-age-model SCA virtual-population-analysis VPA cohort-analysis catch-curve length-based-model age-based-model stage-based-model size-based-model trait-based-model individual-based-model IBM agent-based-model ABM ecosystem-model end-to-end-model EwE Atlantis OSMOSE InVEST Marxan prioritization systematic-conservation-planning SCP gap-analysis representativeness adequacy effectiveness equity fairness legitimacy compliance enforcement monitoring surveillance observation data-collection sampling survey census index indicator metric variable parameter estimate prediction forecast projection scenario what-if-analysis sensitivity-analysis uncertainty-analysis risk-analysis decision-analysis trade-off-analysis optimization multi-objective-optimization Pareto-front Pareto-optimal non-dominated-solution stakeholder interest-group rights-holder user-group community indigenous-people local-knowledge traditional-knowledge TK traditional-ecological-knowledge TEK citizen-science participatory-science community-based-monitoring CBM co-management joint-management shared-governance adaptive-co-management transboundary-management regional-seas regional-fishery-body RFB regional-fishery-management-organization RFMO arrangement commission council committee working-group expert-group scientific-committee technical-committee compliance-committee dispute-settlement arbitration conciliation mediation negotiation bargaining coalition alliance partnership network platform forum conference meeting session symposium workshop seminar training capacity-building technology-transfer technical-assistance financial-assistance funding grant loan donation collaboration cooperation coordination harmonization standardization best-practice guideline manual handbook code-of-conduct code-of-practice certification eco-label seal-of-approval sustainability-standard marine-stewardship-council MSC aquaculture-stewardship-council ASC friend-of-the-sea global-G.A.P.BRC IFS SQF FSSC-22000 ISO-22000 HACCP GMP SSOP traceability chain-of-custody blockchain digital-traceability electronic-monitoring EM electronic-reporting ER VMS AIS satellite-monitoring remote-sensing earth-observation geographic-information-system GIS global-positioning-system GPS automatic-identification-system vessel-monitoring-system catch-documentation-scheme CDS port-state-measures catch-certification trade-tracking isotope-analysis otolith-microchemistry parasite-tag tagging mark-recapture telemetry acoustic-telemetry satellite-telemetry archival-tag data-storage-tag DST pop-up-satellite-archival-tag PSAT smart-tag biologging bio-telemetry sensor accelerometer magnetometer gyroscope pressure-sensor temperature-sensor light-sensor dissolved-oxygen-sensor salinity-sensor conductivity-sensor pH-sensor chlorophyll-sensor turbidity-sensor acoustic-Doppler-current-profiler ADCP echosounder multibeam-echosounder single-beam-echosounder split-beam-echosounder scientific-echosounder fishing-echosounder sonar side-scan-sonar synthetic-aperture-sonar SAS sub-bottom-profiler seismic-profiler gravimeter bathymetric-lidar airborne-lidar satellite-altimetry radar-altimetry laser-altimetry photogrammetry structure-from-motion SfM underwater-photogrammetry video-analysis image-analysis machine-learning artificial-intelligence AI deep-learning neural-network computer-vision pattern-recognition object-detection instance-segmentation semantic-segmentation classification clustering regression forecasting time-series-analysis spatial-analysis geostatistics kriging inverse-distance-weighting IDW triangulated-irregular-network TIN digital-elevation-model DEM digital-terrain-model DTM digital-surface-model DSM habitat-suitability-model species-distribution-model SDM ecological-niche-model ENM habitat-suitability-index HSI environmental-suitability bioclimatic-envelope climate-envelope fundamental-niche realized-niche potential-distribution actual-distribution range-map distribution-map occurrence-record presence-only-data presence-absence-data abundance-data density-data effort-data detection-probability occupancy-model N-mixture-model distance-sampling line-transect point-transect strip-transect plotless-sampling quadrat transect stratified-random-sampling systematic-sampling cluster-sampling adaptive-cluster-sampling two-phase-sampling double-sampling multi-phase-sampling sampling-design sample-size statistical-power effect-size significance-level confidence-level confidence-interval credible-interval prediction-interval tolerance-interval hypothesis-test null-hypothesis alternative-hypothesis type-I-error type-II-error false-positive false-negative sensitivity specificity accuracy precision recall F1-score ROC-curve AUC model-validation model-verification model-calibration model-selection model-comparison model-averaging ensemble-model multi-model-inference information-criterion AIC AICc BIC DIC WAIC LOOIC cross-validation k-fold-cross-validation leave-one-out-cross-validation bootstrap jackknife permutation-test randomization-test Monte-Carlo-simulation Markov-chain-Monte-Carlo MCMC Bayesian-inference frequentist-inference likelihood posterior-probability prior-probability prior-distribution posterior-distribution conjugate-prior non-informative-prior weakly-informative-prior hierarchical-model mixed-effects-model random-effects-model fixed-effects-model generalized-linear-model GLM generalized-additive-model GAM generalized-linear-mixed-model GLMM generalized-additive-mixed-model GAMM structural-equation-model SEM path-analysis confirmatory-factor-analysis CFA exploratory-factor-analysis EFA principal-component-analysis PCA principal-coordinate-analysis PCoA non-metric-multidimensional-scaling NMDS correspondence-analysis CA detrended-correspondence-analysis DCA redundancy-analysis RDA canonical-correspondence-analysis CCA partial-least-squares PLS orthogonal-partial-least-squares OPLS artificial-neural-network ANN random-forest RF gradient-boosting-machine GBM XGBoost LightGBM CatBoost support-vector-machine SVM k-nearest-neighbor KNN naive-Bayes decision-tree regression-tree classification-tree bagging boosting stacking ensembling voting blending meta-learning transfer-learning domain-adaptation few-shot-learning zero-shot-learning self-supervised-learning unsupervised-learning supervised-learning semi-supervised-learning reinforcement-learning active-learning online-learning incremental-learning lifelong-learning continual-learning federated-learning distributed-learning edge-computing cloud-computing high-performance-computing HPC parallel-computing GPU-computing quantum-computing neuromorphic-computing DNA-computing biological-computing natural-computing swarm-intelligence ant-colony-optimization particle-swarm-optimization genetic-algorithm evolutionary-algorithm differential-evolution simulated-annealing tabu-search variable-neighborhood-search iterated-local-search guided-local-search greedy-randomized-adaptive-search-procedure GRASP scatter-search path-relinking memetic-algorithm hyper-heuristic meta-heuristic optimization-heuristic constructive-heuristic improvement-heuristic local-search neighborhood-search large-neighborhood-search LNS adaptive-large-neighborhood-search ALNS branch-and-bound branch-and-cut branch-and-price column-generation Benders-decomposition Dantzig-Wolfe-decomposition Lagrangian-relaxation surrogate-relaxation dual-ascent primal-dual-method interior-point-method simplex-method revised-simplex-method dual-simplex-method network-simplex-method barrier-method penalty-method augmented-Lagrangian-method sequential-quadratic-programming SQP sequential-linear-programming SLP trust-region-method line-search-method gradient-descent steepest-descent conjugate-gradient quasi-Newton-method Newton-method Gauss-Newton-method Levenberg-Marquardt-method trust-region-reflective-method interior-point-reflective-method active-set-method projected-gradient-method proximal-gradient-method accelerated-gradient-method momentum-method Nesterov-acceleration AdaGrad RMSprop Adam AdamW SGD stochastic-gradient-descent mini-batch-gradient-descent batch-gradient-descent full-gradient-descent variance-reduction SAG SAGA SVRG L-BFGS limited-memory-BFGS BFGS DFP SR1 Nelder-Mead-method Powell's-method Hooke-Jeeves-method pattern-search direct-search derivative-free-optimization black-box-optimization bayesian-optimization Gaussian-process kriging-surrogate response-surface-method RSM polynomial-chaos-expansion PCE sparse-grid sparse-polynomial-approximation low-rank-approximation tensor-decomposition CP-decomposition Tucker-decomposition tensor-train TT hierarchical-Tucker HT matrix-factorization non-negative-matrix-factorization NMF singular-value-decomposition SVD independent-component-analysis ICA factor-analysis latent-variable-model latent-class-model finite-mixture-model hidden-Markov-model HMM state-space-model dynamic-linear-model DLM Kalman-filter particle-filter sequential-Monte-Carlo SMC ensemble-Kalman-filter EnKF unscented-Kalman-filter UKF extended-Kalman-filter EKF Rauch-Tung-Striebel-smoother RTS-smoother forward-backward-algorithm Viterbi-algorithm Baum-Welch-algorithm expectation-maximization EM-algorithm variational-inference variational-Bayes mean-field-approximation loopy-belief-propagation sum-product-algorithm max-product-algorithm junction-tree-algorithm bucket-elimination variable-elimination conditioning cutset-conditioning constraint-satisfaction CSP satisfiability SAT MAX-SAT pseudo-Boolean-optimization integer-linear-programming ILP mixed-integer-linear-programming MILP mixed-integer-nonlinear-programming MINLP quadratic-programming QP quadratically-constrained-quadratic-programming QCQP second-order-cone-programming SOCP semidefinite-programming SDP geometric-programming GP signomial-programming SP difference-of-convex-programming DC-programming complementary-geometric-programming CGP generalized-geometric-programming GGP posynomial monomial signomial polynomial rational-function algebraic-function transcendental-function analytic-function meromorphic-function entire-function holomorphic-function harmonic-function subharmonic-function superharmonic-function plurisubharmonic-function plurisuperharmonic-function convex-function concave-function quasiconvex-function quasiconcave-function log-convex-function log-concave-function geometrically-convex-function multiplicatively-convex-function operator-convex-function matrix-convex-function spectral-function unitarily-invariant-function orthogonally-invariant-function permutation-invariant-function symmetric-function Schur-convex-function Schur-concave-function majorization weak-majorization strong-majorization doubly-stochastic-matrix Birkhoff-polytope permutahedron transportation-polytope network-flow minimum-cost-flow maximum-flow minimum-cut shortest-path longest-path traveling-salesman-problem TSP vehicle-routing-problem VRP capacitated-VRP CVRP VRP-with-time-windows VRPTW pickup-and-delivery-problem PDP dial-a-ride-problem DARP arc-routing-problem ARP Chinese-postman-problem CPP rural-postman-problem RPP location-problem facility-location p-median-problem p-center-problem uncapacitated-facility-location UFL capacitated-facility-location CFL warehouse-location plant-location hub-location median-problem center-problem covering-problem set-covering vertex-covering edge-covering dominating-set independent-set clique graph-coloring chromatic-number clique-number independence-number domination-number matching perfect-matching maximum-matching b-matching f-factor g-factor network-design Steiner-tree Steiner-forest prize-collecting-Steiner-tree k-MST minimum-spanning-tree MST maximum-spanning-tree minimum-arborescence minimum-directed-spanning-tree minimum-Steiner-tree approximation-algorithm approximation-ratio performance-guarantee inapproximability NP-hardness NP-completeness computational-complexity time-complexity space-complexity polynomial-time exponential-time quasi-polynomial-time sub-exponential-time fixed-parameter-tractable FPT W-hierarchy parameterized-complexity kernelization kernel treewidth pathwidth branchwidth cliquewidth rankwidth booleanwidth modularwidth split-decomposition modular-decomposition prime-graph cograph permutation-graph interval-graph chordal-graph perfect-graph comparability-graph co-comparability-graph AT-free-graph claw-free-graph line-graph planar-graph outerplanar-graph series-parallel-graph treewidth-bounded-graph minor-free-graph forbidden-minor forbidden-topological-minor forbidden-induced-subgraph graph-minor-theorem Robertson-Seymour-theorem well-quasi-ordering Wagner's-conjecture Hadwiger's-conjecture Four-Color-Theorem Strong-Perfect-Graph-Theorem Erdős–Faber–Lovász-conjecture Gyárfás–Sumner-conjecture Erdős–Hajnal-conjecture Caccetta–Häggkvist-conjecture Bermond–Thomassen-conjecture Thomassen's-conjecture Tutte's-conjecture Grötzsch's-theorem Brooks'-theorem Vizing's-theorem Shannon's-theorem König's-theorem Kőnig's-line-coloring-theorem Menger's-theorem max-flow-min-cut-theorem Ford-Fulkerson-theorem Edmonds'-matching-theorem Tutte's-theorem Petersen's-theorem Hall's-marriage-theorem Dilworth's-theorem Mirsky's-theorem Sperner's-theorem Erdős–Ko–Rado-theorem Kruskal–Katona-theorem Lovász's-perfect-graph-theorem Chudnovsky's-strong-perfect-graph-theorem Seymour's-decomposition-theorem Robertson–Seymour–Thomas-theorem Heawood-conjecture Ringel–Youngs-theorem Map-Color-Theorem Appel–Haken-proof Robertson–Seymour–Sanders–Thomas-proof computer-assisted-proof formal-proof interactive-theorem-proving proof-assistant Coq Isabelle HOL HOL-Light Lean Agda Twelf Mizar Metamath automated-theorem-proving SAT-solver SMT-solver model-checker temporal-logic CTL LTL CTL*modal-mu-calculus fixed-point-logic description-logic OWL RDF SPARQL knowledge-graph ontology semantic-web linked-data open-data FAIR-data findable accessible interoperable reusable data-management-plan DMP metadata provenance data-quality data-curation data-preservation data-archiving data-repository institutional-repository disciplinary-repository general-repository figshare Zenodo Dryad GBIF OBIS WoRMS Catalogue-of-Life COL ITIS NCBI BOLD iNaturalist eBird eButterfly iDigBio ALA AVH BIE BISON Map-of-Life MOL Movebank OTN SAHFOS CPR ICES NAFO NEAFC SEAFO WCPFC IATTC ICCAT IOTC CCSBT CCAMLR GFCM CWP CWP-15 CWP-16 CWP-17 CWP-18 CWP-19 CWP-20 CWP-21 CWP-22 CWP-23 CWP-24 CWP-25 CWP-26 CWP-27 CWP-28 CWP-29 CWP-30 CWP-31 CWP-32 CWP-33 CWP-34 CWP-35 CWP-36 CWP-37 CWP-38 CWP-39 CWP-40 CWP-41 CWP-42 CWP-43 CWP-44 CWP-45 CWP-46 CWP-47 CWP-48 CWP-49 CWP-50 CWP-51 CWP-52 CWP-53 CWP-54 CWP-55 CWP-56 CWP-57 CWP-58 CWP-59 CWP-60 CWP-61 CWP-62 CWP-63 CWP-64 CWP-65 CWP-66 CWP-67 CWP-68 CWP-69 CWP-70 CWP-71 CWP-72 CWP-73 CWP-74 CWP-75 CWP-76 CWP-77 CWP-78 CWP-79 CWP-80 CWP-81 CWP-82 CWP-83 CWP-84 CWP-85 CWP-86 CWP-87 CWP-88 CWP-89 CWP-90 CWP-91 CWP-92 CWP-93 CWP-94 CWP-95 CWP-96 CWP-97 CWP-98 CWP-99 CWP-100 CWP-101 CWP-102 CWP-103 CWP-104 CWP-105 CWP-106 CWP-107 CWP-108 CWP-109 CWP-110 CWP-111 CWP-112 CWP-113 CWP-114 CWP-115 CWP-116 CWP-117 CWP-118 CWP-119 CWP-120 CWP-121 CWP-122 CWP-123 CWP-124 CWP-125 CWP-126 CWP-127 CWP-128 CWP-129 CWP-130 CWP-131 CWP-132 CWP-133 CWP-134 CWP-135 CWP-136 CWP-137 CWP-138 CWP-139 CWP-140 CWP-141 CWP-142 CWP-143 CWP-144 CWP-145 CWP-146 CWP-147 CWP-148 CWP-149 CWP-150 CWP-151 CWP-152 CWP-153 CWP-154 CWP-155 CWP-156 CWP-157 CWP-158 CWP-159 CWP-160 CWP-161 CWP-162 CWP-163 CWP-164 CWP-165 CWP-166 CWP-167 CWP-168 CWP-169 CWP-170 CWP-171 CWP-172 CWP-173 CWP-174 CWP-175 CWP-176 CWP-177 CWP-178 CWP-179 CWP-180 CWP-181 CWP-182 CWP-183 CWP-184 CWP-185 CWP-186 CWP-187 CWP-188 CWP-189 CWP-190 CWP-191 CWP-192 CWP-193 CWP-194 CWP-195 CWP-196 CWP-197 CWP-198 CWP-199 CWP-200
Thoracochaeta
Thoracochaeta is a genus of small flies in the family Sphaeroceridae, commonly known as lesser dung flies. The genus is associated with marine supralittoral habitats, particularly in coastal environments. In the Nearctic region, it has been treated as a subgenus of Leptocera (Leptocera (Thoracochaeta)), with nine species recognized. Larvae have been described for at least three species.
marine coastal supralittoral Diptera Sphaeroceridae lesser-dung-flies
Thoracochaeta seticosta
Thoracochaeta seticosta is a species of small dung fly in the family Sphaeroceridae, originally described as Leptocera seticosta by Spuler in 1925. It belongs to the subgenus Thoracochaeta, a group associated with marine supralittoral habitats. The larvae have been formally described, distinguishing it from many related species where immature stages remain unknown. The species occurs in Europe and has been recorded in the Nearctic region.
sphaeroceridae marine coastal supralittoral larvae-described
Thoracochaeta zosterae
lesser dung fly
Thoracochaeta zosterae is a small dung fly in the family Sphaeroceridae. It inhabits coastal marine environments, where larvae develop in seaweed. The species was originally described from the Palearctic and has been recorded in the Nearctic region. It is part of a subgenus specialized for supralittoral habitats.
marine coastal diptera sphaeroceridae supralittoral seaweed-associated
Traskorchestia
beach hoppers
Traskorchestia is a genus of beach hoppers in the family Talitridae, established by Bousfield in 1982. The genus contains at least three described species: T. georgiana, T. ochotensis, and T. traskiana (the Pacific beach hopper). These amphipods inhabit coastal environments and are part of the supralittoral community.
amphipod talitridae beach-hopper coastal supralittoral detritivore Pacific-coast
Traskorchestia traskiana
Pacific beach hopper
Traskorchestia traskiana, the Pacific beach hopper, is a supralittoral amphipod inhabiting coastal beaches of the Pacific Northwest. Its activity patterns are directly influenced by tidal inundation cycles, with behavioral adaptations to periodic flooding in the zone above the high tide line. The species has been studied for its population biology and behavioral responses to environmental conditions in nearshore ecosystems.
amphipod beach-hopper supralittoral intertidal Pacific-coast Talitridae tidal-behavior
Tylidae
Calloused Beach Pillbugs and Heller's Isopod
Tylidae is a family of terrestrial isopods (woodlice) comprising approximately 27 species, with all but one species placed in the genus Tylos; the sole exception is Helleria brevicornis. Together with Ligiidae, Tylidae represents an early-diverging lineage among woodlouse families. Members are primarily associated with coastal sandy beach habitats in the supralittoral zone.
Isopoda Oniscidea woodlice sandy-beach supralittoral coastal bioindicator
Tylos punctatus
Spotted Calloused Beach Pillbug
Tylos punctatus is a large, strictly nocturnal sand-beach isopod inhabiting sheltered intertidal zones from southern California to Baja California. It exhibits remarkable behavioral adaptations to this harsh environment, including precise burrowing cycles synchronized with tidal patterns and seasonal dormancy. The species has an exceptionally slow life history for an isopod, with females breeding only once annually after reaching maturity at approximately three years of age.
isopod woodlouse sand-beach intertidal nocturnal burrowing scavenger supralittoral California Baja-California slow-life-history semelparous tidal-rhythm marine-detritivore bioindicator copper-accumulation