Poučne staze za samostalni obilazak u zaštićenim područjima i njihov značaj za ekološko obrazovanje posjetitelja

Navrátil, Josef; Knotek, Jaroslav; Pícha, Kamil

doi:10.17234/socekol.24.1.3

SocEkol

2015

DOI: 10.17234/socekol.24.1.3

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Poučne staze za samostalni obilazak u zaštićenim područjima i njihov značaj za ekološko obrazovanje posjetitelja

Josef Navrátil

Jaroslav Knotek

Kamil Pícha

Abstract: Th e aim of this article is to identify the level of environmental knowledge of visitors to interpretive trails. Specifi cally, this research investigates the factors that infl uence potential diff erences in the en

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Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae

Collado,

Flores,

Vidal

et al. 2023

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The biodiversity of molluscs is highly threatened in marine, terrestrial and freshwater ecosystems worldwide. This research aimed at studying the distribution and conservation status of eight poorly-known micro-snails of the genera Stephacharopa and Stephadiscus in Chile. We performed a comprehensive review of literature and databases to determine the occurrences of the species, which were mapped on vector layers containing protected areas and human development infrastructure to find potential threats. Conservation status assessment was performed following the criteria and tools implemented by the International Union for the Conservation of Nature (IUCN) Red List and NatureServe. We also conducted species distribution models, based on maximum entropy, to identify areas that should be prioritised for conservation. Two species meet the criteria for IUCN listing as Critically Endangered (CR), four Endangered (EN), one Vulnerable (Vu) and one Least Concern (LC). This classification is rather coincident with equivalent categories obtained under the NatureServe standard, in which two species were ranked as Critically Imperiled (N1), five Imperiled (N2) and one Vulnerable (N3). We found that Stephacharopa paposensis is the most at-risk species, with only one occurrence not included in a protected area, followed by Stephadiscus stuardoi, with two occurrences, one of them within a protected area. Stephadiscus lyratus was the species with the greatest geographic range, accounting for 17 occurrences, seven matching a protected area. We found wider potential ranges in modelled species that may be useful for prioritising conservation measures. Considering distributional data, protected areas and more than 20 plausible threats identified, we propose potential in situ and ex situ conservation actions to protect these neglected micro-snails.

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Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae

Collado,

Flores,

Vidal

et al. 2023

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Distribution, conservation status and proposed measures for preservation of Radiodiscus microgastropods in Chile

Collado

Salvador

Vidal

et al. 2023

PeerJ

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The genus Radiodiscus includes minute terrestrial snails occurring throughout the American continent. We assessed the conservation status of eight poorly known Chilean Radiodiscus species using the International Union for Conservation of Nature (IUCN) and NatureServe categories and criteria. Under the IUCN guidelines the species were assessed using the Criterion B of geographic range, which considers the extent of occurrence (EOO) and area of occupancy (AOO) as subcriteria. For NatureServe we used these two parameters plus the number of occurrences, ecological viability, and threats. Considering species rarity and possible sampling bias, we also used ecological niche modeling to determine climate and environmental tolerances and predict potential species distributions analyzing bioclimatic and geographical layers. Radiodiscus australis, R. coarctatus and R. quillajicola were listed as Critically Endangered by IUCN and NatureServe standards; R. coppingeri, R. flammulatus, R. magellanicus and R. villarricensis as Endangered by both methods; while R. riochicoensis as Endangered by IUCN standards and Vulnerable by NatureServe standards. Niche modeling results indicated that Radiodiscus species respond to different environmental conditions and that the predicted distribution areas contain suitable habitats beyond the current ranges, which may be helpful for future management plans. Nature-based sport tourism, forestry activities, urbanization, roads, pollution, mining, forest fires, livestock, volcanism, tsunamis, soil erosion and introduced species are among the major threats affecting these snails. Based on the low number of occurrences and the threats identified, the most at-risk species are R. coarctatus and R. quillajicola (one record), R. australis (two records) and R. villarricensis (three records); the latter two lacking occurrences within protected areas. Compiling our findings, we propose a list of actions to preserve Chilean Radiodiscus species.

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Poučne staze za samostalni obilazak u zaštićenim područjima i njihov značaj za ekološko obrazovanje posjetitelja

Abstract: Th e aim of this article is to identify the level of environmental knowledge of visitors to interpretive trails. Specifi cally, this research investigates the factors that infl uence potential diff erences in the en

Cited by 2 publications

References 42 publications

Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae

Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae

Distribution, conservation status and proposed measures for preservation of Radiodiscus microgastropods in Chile

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Poučne staze za samostalni obilazak u zaštićenim područjima i njihov značaj za ekološko obrazovanje posjetitelja

Abstract: Th e aim of this article is to identify the level of environmental knowledge of visitors to interpretive trails. Specifi cally, this research investigates the factors that infl uence potential diff erences in the en

Cited by 2 publications

References 42 publications

﻿Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae

﻿Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae

Distribution, conservation status and proposed measures for preservation of Radiodiscus microgastropods in Chile

Contact Info

Product

Resources

About

Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae

Distribution, conservation assessment and management perspectives of Chilean micro-snails of the family Charopidae