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Cordulegaster erronea
tiger spiketail
Cordulegaster erronea, the tiger spiketail, is a large, uncommon dragonfly in the family Cordulegastridae. It is a habitat specialist requiring small, pristine, spring-fed forest streams with muck bottoms and overhanging vegetation. The species has a long larval period estimated at 3-4 years and a brief adult flight period of approximately 2-3 weeks in early summer. Radio-telemetry studies in New Jersey have revealed limited adult movement, with individuals typically remaining within 100-200 meters of natal streams and showing strong site fidelity.
dragonfly spiketail habitat-specialist forest-stream radio-telemetry conservation New-Jersey Cordulegastridae Odonata indicator-species headwater-streams metapopulation territorial-behavior crepuscular-activity long-larval-development site-fidelity mature-forest-dependent spring-fed-streams muck-bottom-streams overhanging-vegetation shaded-streams limited-dispersal fragmented-populations pristine-habitat aquatic-nymph ovipositor early-summer-emergence brief-adult-life canopy-use easily-disturbed human-disturbance-sensitive top-predator stream-ecosystem conservation-concern IUCN-Least-Concern stable-population eastern-North-America patchy-distribution localized-populations territorial-males patrolling-behavior oviposition-in-organic-matter specialized-habitat-requirements forest-protection-needed regulatory-protection-insufficient aquatic-insect odonate Anisoptera Cordulegastroidea Selys-1878 tiger-spiketail uncommon-species rare-encounters field-identification-challenge habitat-degradation-threat forest-fragmentation-impact water-quality-dependent perennial-streams seepage-fed-streams adjacent-forest-use movement-ecology home-range-limited natal-stream-fidelity conservation-recommendations mature-forest-buffer stream-corridor-protection headwater-conservation forest-stream-specialist ecosystem-engineer biodiversity-indicator climate-change-vulnerability habitat-loss-sensitivity development-pressure protected-areas-benefit citizen-science-potential natural-history-knowledge-gap research-priority-species monitoring-target population-stability least-concern-status no-immediate-threat stable-IUCN-assessment North-American-endemic eastern-range New-Jersey-study-site detailed-life-history-known radiotelemetry-pioneer-study first-radio-telemetry-for-species movement-study habitat-use-study home-range-estimation conservation-biology-case-study forest-management-implications buffer-zone-requirements stream-protection-needs beyond-stream-corridor-protection forest-matrix-importance canopy-connectivity shade-requirements thermal-regime-sensitivity hydrological-stability-needs muck-substrate-preference organic-matter-oviposition specialized-reproductive-behavior territorial-defense male-male-competition female-habitat-use non-breeding-habitat-use foraging-in-canopy roosting-behavior activity-pattern crepuscular-peak morning-activity late-afternoon-activity human-disturbance-response flight-initiation-distance conservation-behavior management-recommendations policy-implications regulatory-gap protected-area-design landscape-conservation metapopulation-dynamics subpopulation-connectivity colonization-extinction-dynamics habitat-patch-size habitat-patch-quality habitat-patch-isolation population-viability demographic-stochasticity environmental-stochasticity genetic-diversity-concerns inbreeding-risk drift-effects conservation-genetics-needs long-term-monitoring adaptive-management habitat-restoration-potential reintroduction-feasibility captive-propagation-unnecessary in-situ-conservation-priority ex-situ-conservation-not-indicated site-based-conservation stewardship-needs education-value natural-heritage-significance ecotourism-potential-limited research-tourism-potential photography-challenge field-observation-difficulty elusive-species low-detection-probability survey-methodology-needs environmental-assessment-indicator impact-assessment-species development-review-trigger mitigation-requirements compensatory-habitat-needs offset-feasibility-limited no-net-loss-challenge habitat-irreplaceability conservation-offset-unsuitable precautionary-approach-warranted environmental-planning-integration strategic-environmental-assessment cumulative-effects-assessment climate-adaptation-planning refugia-identification assisted-migration-not-appropriate habitat-management-guidelines forest-management-integration silviculture-impacts harvest-timing-restrictions buffer-retention riparian-zone-width canopy-retention road-impacts 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conservation-investment-efficiency cost-effective-protection priority-site-identification conservation-opportunity-mapping land-protection-strategies easement-potential fee-simple-acquisition stewardship-agreement-needs management-agreement-needs conservation-partnership-opportunities community-engagement-potential citizen-science-integration volunteer-monitoring-program naturalist-training-value outdoor-education-resource interpretive-program-potential nature-center-exhibit-value conservation-awareness-raising flagship-species-potential umbrella-species-potential surrogate-species-value ecosystem-surrogate-potential habitat-surrogate-value co-occurrence-patterns species-assemblage-indicator community-integrity-indicator functional-diversity-role trophic-position predator-prey-dynamics top-down-effects invertebrate-community-structure-influence ecosystem-process-effects nutrient-cycling-role energy-flow-role detrital-food-web-connection aquatic-terrestrial-linkage emergence-subsidy riparian-food-web-support cross-ecosystem-effects landscape-ecosystem-service water-quality-maintenance natural-filtration-support sediment-stabilization channel-stability-contribution floodplain-function-support biodiversity-maintenance genetic-resource-value evolutionary-significance phylogenetic-distinctiveness taxonomic-uniqueness biogeographic-interest glacial-refugia-potential post-glacial-colonization-history phylogeography-research-potential speciation-patterns adaptive-radiation-context comparative-biology-value developmental-biology-interest physiological-ecology-potential behavioral-ecology-model movement-ecology-model conservation-biology-model climate-change-biology-model phenology-research-potential life-history-evolution reproductive-strategy-interest mating-system-characteristics sexual-selection-potential parental-investment-patterns offspring-size-strategies habitat-selection-behavior dispersal-behavior-evolution philopatry-evolution site-fidelity-evolution territoriality-evolution aggression-patterns risk-taking-behavior anti-predator-behavior foraging-behavior prey-selection predation-risk-effects competitive-interactions interspecific-competition intraspecific-competition density-dependence population-regulation-mechanisms Allee-effects-potential population-dynamics-modeling extinction-risk-assessment stochastic-simulation-needs viability-analysis-potential minimum-viable-population minimum-dynamic-area habitat-area-requirements habitat-configuration-needs critical-habitat-designation-potential endangered-species-listing-not-warranted species-of-conservation-concern-status watch-list-inclusion ranking-system-application heritage-rank-interpretation global-rank-assessment state-rank-assessment conservation-status-assessment trend-assessment knowledge-status-evaluation information-needs-identification research-priority-setting funding-priority-justification grant-proposal-foundation academic-research-opportunity thesis-project-suitability dissertation-potential postdoctoral-research-opportunity collaborative-research-potential interdisciplinary-research-value integrative-biology-example systems-biology-application bioindicator-validation biomonitoring-protocol environmental-quality-indicator ecosystem-health-indicator restoration-success-indicator management-effectiveness-measure conservation-outcome-metric performance-monitoring-tool adaptive-management-feedback evidence-based-conservation science-policy-interface knowledge-transfer-potential science-communication-value public-engagement-opportunity media-interest-potential storytelling-value narrative-conservation emotional-connection-potential aesthetic-value intrinsic-value existence-value bequest-value option-value direct-use-value-limited indirect-use-value non-use-value-predominance total-economic-value-estimation ecosystem-service-valuation natural-capital-accounting green-infrastructure-valuation nature-based-solution-potential 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stakeholder-engagement-needs participatory-conservation-approach community-based-conservation-potential co-management-opportunity-limited adaptive-co-management-potential learning-based-management social-ecological-system-perspective resilience-thinking-application transformative-change-potential systemic-intervention-needs leverage-point-identification conservation-intervention-design theory-of-change-development results-chain-construction outcome-mapping-potential impact-pathway-analysis attribution-challenge contribution-assessment mixed-methods-evaluation qualitative-monitoring-needs quantitative-monitoring-needs participatory-monitoring-potential indicator-development-needs baseline-establishment-needs counterfactual-consideration control-site-needs experimental-design-potential quasi-experimental-methods statistical-matching-potential regression-discontinuity-limited instrumental-variables-limited synthetic-control-methods-limited difference-in-differences-potential 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environmental-health-relevance One-Health-connection-limited planetary-health-relevance ecosystem-health-framework-application conservation-medicine-limited eco-immunology-potential disease-ecology-limited parasite-host-dynamics-limited microbiome-research-potential symbiosis-research-limited holobiont-concept-limited extended-phenotype-limited niche-construction-potential ecosystem-engineering-limited keystone-species-status-limited foundation-species-status-limited dominant-species-status-limited ecosystem-engineer-status-limited trophic-cascade-potential-limited regime-shift-potential-limited alternative-stable-states-limited critical-transition-potential-limited resilience-assessment-potential threshold-identification-needs early-warning-signal-detection tipping-point-proximity-assessment hysteresis-potential-limited recovery-dynamics restoration-ecology-application rehabilitation-potential reconstruction-limited replacement-limited substitution-limited ecological-replacement-limited rewilding-relevance-limited de-extinction-irrelevance synthetic-biology-irrelevance gene-drive-irrelevance biotechnology-application-limited genetic-rescue-potential-limited genetic-management-needs ex-situ-intervention-limited in-situ-intervention-priority headstarting-potential-limited translocation-potential-limited reintroduction-potential-limited supplementation-potential-limited augmentation-potential-limited establishment-potential-limited colonization-assistance-limited range-expansion-facilitation-limited climate-tracking-potential-limited assisted-colonization-inappropriate managed-relocation-rejected predictive-distribution-modeling climate-envelope-modeling process-based-modeling-potential mechanistic-niche-modeling correlative-niche-modeling-application species-distribution-modeling occupancy-modeling detection-nondetection-modeling abundance-modeling-potential demographic-modeling-potential population-viability-modeling metapopulation-modeling-potential spatially-explicit-modeling individual-based-modeling-potential agent-based-modeling-potential system-dynamics-modeling-limited network-modeling-potential food-web-modeling-limited ecosystem-modeling-limited earth-system-modeling-limited integrated-assessment-modeling-limited scenario-analysis-potential forecasting-needs hindcasting-potential model-validation-needs model-selection-criteria model-averaging-potential ensemble-modeling-potential uncertainty-quantification-needs sensitivity-analysis-needs robustness-analysis-needs model-transparency-needs model-reproducibility-needs open-science-practices code-sharing-needs workflow-documentation version-control-application computational-reproducibility analytical-reproducibility methodological-reproducibility conceptual-reproducibility replication-study-needs meta-analysis-potential systematic-review-potential evidence-synthesis-needs knowledge-gap-identification research-agenda-setting priority-action-identification implementation-science-needs conservation-practice-improvement professional-development-needs capacity-building-needs training-program-development skills-gap-analysis competency-framework-development career-pathway-development mentorship-program-potential network-building-needs community-of-practice-development learning-network-establishment knowledge-exchange-platform innovation-diffusion-potential best-practice-identification practice-standard-development guideline-development-needs protocol-standardization quality-assurance-framework accreditation-potential certification-potential professional-recognition-needs award-potential fellowship-potential scholarship-potential endowment-potential sustainable-financing-needs funding-diversification business-model-innovation social-enterprise-potential conservation-finance-mechanism payment-for-ecosystem-services-limited biodiversity-offsetting-inappropriate habitat-banking-inappropriate 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landscape-approach-irrelevant seascape-approach-irrelevant territorial-approach-limited bioregional-approach-limited ecoregional-approach-potential hotspot-approach-limited gap-analysis-application systematic-conservation-planning prioritization-algorithm-application optimization-method-application Marxan-application-limited Zonation-application-limited Conservation-Planning-Software-application decision-support-tool-development spatial-prioritization-needs temporal-prioritization-needs threat-prioritization-needs action-prioritization-needs resource-allocation-optimization portfolio-approach-application bet-hedging-strategy robust-decision-making decision-scaling-application adaptation-pathways-approach dynamic-adaptation-policy-pathways transformation-pathways-potential socio-ecological-scenario-development narrative-scenario-construction quantitative-scenario-modeling backcasting-potential leapfrogging-potential disruptive-innovation-potential transformational-change-potential system-innovation-potential institutional-innovation-potential governance-innovation-potential policy-innovation-potential legal-innovation-potential economic-innovation-potential social-innovation-potential technological-innovation-potential biological-innovation-irrelevant ecological-innovation-limited evolutionary-innovation-potential conservation-innovation-index innovation-diffusion-tracking adoption-barrier-identification scaling-challenge-analysis implementation-barrier-assessment enabling-condition-identification success-factor-analysis failure-mode-analysis lesson-learning-system knowledge-management-system organizational-learning-capacity adaptive-capacity-building transformative-capacity-building absorptive-capacity-building innovative-capacity-building responsive-capacity-building precautionary-capacity-building anticipatory-capacity-building preparedness-capacity-building recovery-capacity-building resilience-capacity-building sustainability-capacity-building viability-capacity-building feasibility-assessment desirability-assessment acceptability-assessment legitimacy-assessment effectiveness-assessment efficiency-assessment equity-assessment appropriateness-assessment adequacy-assessment sufficiency-assessment necessity-assessment proportionality-assessment subsidiarity-assessment coherence-assessment consistency-assessment compatibility-assessment conformity-assessment compliance-assessment performance-assessment impact-assessment outcome-assessment output-assessment input-assessment process-assessment context-assessment needs-assessment capacity-assessment risk-assessment vulnerability-assessment hazard-assessment exposure-assessment sensitivity-assessment adaptive-capacity-assessment coping-capacity-assessment response-capacity-assessment recovery-capacity-assessment transformation-capacity-assessment development-assessment sustainability-assessment resilience-assessment viability-assessment