Rareza, estatus de conservación y sus determinantes ecológicos. Revisión de su aplicación a escala regional

Carrascal, Luis M.; Palomino, David

doi:10.3989/graellsia.2006.v62.iextra.131

Cited by 5 publications

(5 citation statements)

References 94 publications

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“…We identified half of the threatened species as rare, in agreement with the idea of linking conservation problems with the ecological phenomenon of rarity (Carrascal & Palomino 2006). On the other hand, the relationship between the determinants of rarity and the real risk of the conservation of species can also vary greatly depending on distribution, abundance, ecological valence, geographic extension or different levels of human influence (Carrascal & Palomino 2006). Although Homonota taragui and Ameivula sp.…”

Section: Discussionsupporting

confidence: 74%

“…This result is similar to that observed in inventories in RNAG (Zaracho et al 2014) and RNI (Etchepare et al 2013) and it seems to be a general pattern for reptile fauna inventories (Carvajal-Cogollo et al 2007), probably due to the ecology and unpredictable life habits of this group of animals. We identified half of the threatened species as rare, in agreement with the idea of linking conservation problems with the ecological phenomenon of rarity (Carrascal & Palomino 2006). On the other hand, the relationship between the determinants of rarity and the real risk of the conservation of species can also vary greatly depending on distribution, abundance, ecological valence, geographic extension or different levels of human influence (Carrascal & Palomino 2006).…”

Section: Discussionsupporting

confidence: 74%

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The isolated rocky outcrops of northeastern Argentina and their role on the herpetofauna conservation

Piñeiro¹,

Cajade²,

Hernando³

et al. 2021

An. Acad. Bras. Ciênc.

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Isolated rocky outcrops represent biodiversity centers, refuges for endangered species, and favorable scenarios for endemism. Most studies in these ecosystems have been focused mainly on their flora and secondarily on different groups of animals. To highlight the value of rocky outcrops as ecosystems for biodiversity conservation, in the present study, we describe the diversity of herptiles of three isolated rocky outcrops of northeastern Argentina and compare it with that of other natural areas of the region.We conducted fieldwork from September 2010 to March 2017. We calculated the alpha diversity and the number of rare, threatened and endemic species. For comparative diversity analysis, we calculated the importance of each area for amphibians and reptiles and the beta diversity. Were recorded a total of 56 species (23 amphibians and 33 reptiles), representing 35% of the herptiles recorded for Corrientes province. These species included 19 rare species, seven threatened species, and two endemic species. The overall beta diversity showed considerably differences in species composition between the compared areas. The rocky outcrops showed higher importance for amphibians and reptiles than the other areas studied. Our study contributes to the knowledge of rocky outcrops and highlights their importance in biodiversity conservation.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionsupporting

confidence: 74%

The isolated rocky outcrops of northeastern Argentina and their role on the herpetofauna conservation

Piñeiro¹,

Cajade²,

Hernando³

et al. 2021

An. Acad. Bras. Ciênc.

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“…Reptiles (n = 1,648) Birds (n = 2,144) Mammals (n = 1,875) low habitat variety, forest loss, human impacts and climate change (Carrascal & Palomino, 2006;Mainka & Howard, 2010;Nuñeza et al, 2010;Vié et al, 2009), in agreement with theory and empirical evidence that relate population declines with disturbance and habitat homogenization (Echeverrería et al, 2004;Rey Benayas et al, 1999). However, our results show a weak association between rarity and vulnerability of these taxa with climate and human influence variables.…”

Section: Fig 1 Patrón Geográfico De La Riqueza De Species (A-d) Sumentioning

confidence: 99%

Geographic patterns of vertebrate diversity and identification of relevant areas for conservation in Europe

Albuquerque

Benayas

Fernández

et al. 2012

Anim. Biodiv. Conserv.

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The ‘EU Council conclusions on biodiversity post–2010’ re–enforced Europe’s commitment to halt biodiversity loss by 2020. Identifying areas of high–value for biodiversity conservation is an important issue to meet this target. We investigated the geographic pattern of terrestrial vertebrate diversity status in Europe by assessing the species richness, rarity, vulnerability (according to IUCN criteria), and a combined index of the three former for the amphibians, reptiles, bird and mammals of this region. We also correlated the value of all indices with climate and human influence variables. Overall, clear geographic gradients of species diversity were found. The combined biodiversity index indicated that high–value biodiversity areas were mostly located in the Mediterranean basin and the highest vulnerability was found in the Iberian peninsula for most taxa. Across all indexes, the proportion of variance explained by climate and human influence factors was moderate to low. The results obtained in this study have the potential to provide valuable support for nature conservation policies in Europe and, consequently, might contribute to mitigate biodiversity decline in this region.

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“…Estos índices de conservación integran, para cada especie, un valor de conservación Europeo según la clasificación de BirdLife International (TUCKER y HEAT, 1994), que utiliza el valor de SPECs (Categories of Species of European Conservation Concern) de la UICN (Unión Internacional para la Conservación de la Naturaleza). Estas categorías, cuantitativas, definen límites por debajo de los cuales aumenta el grado de amenaza de una especie y están basados en aspectos vinculados al tamaño poblacional, la extensión del área de distribución y las tendencias temporales actuales, así como sus proyecciones futuras (CARRASCAL y PALOMINO, 2006). Estas categorías se definen según la amenaza de cada especie: Non-SPEC, SPEC 4, SPEC 3, SPEC 2, SPEC 1.…”

Section: íNdices De Conservación De La Avifaunaunclassified

Gestión del bosque mediterráneo y conservación de la avifauna: el caso de los alcornocales

Lozano¹,

Subirós²

2012

Polígonos

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RESUMEN:Se presentan los resultados de los diversos estudios de poblaciones de aves realizados en los alcornocales catalanes, especialmente en cuanto a la riqueza específica de los mismos. Dado que los estudios publicados hasta el momento en esta materia eran referidos a la estación reproductora (primavera), se señalan los datos recogidos en los alcornocales de les Gavarres (NE peninsular), durante la estación invernal. Asimismo, se analizan las diversas tipologías de alcornocales que se encuentran en Catalunya, bosques en gestión activa, y por tanto sin sotobosque, y bosques abandonados en los que la biomasa del sotobosque es máxi-ma, y se exponen los resultados de la comparativa entre ambas tipologías de explotación cuando se aplica un índice de conservación de la avifauna, basado en la riqueza de cada una de las especies registradas, la presencia de especies amenazadas según los criterios de la UICN (SPEC) y su categoría de amenaza (non-SPEC, SPEC 4, SPEC 3, SPEC 2 y SPEC 1). Los resultados obtenidos muestran como las explotaciones abandonadas tienen un índice de conservación de avifauna más elevado que los bosques en explotación activa. Se discuten estos resultados en el contexto de la gestión forestal y las ayudas recibidas por parte de las administraciones para llevar a cabo estas prácticas de gestión. PALABRAS CLAVE: alcornocales, avifauna, gestión. MANAGEMENT OF MEDITERRANEAN FORESTS AND AVIAN CONSERVA-TION: THE CASE OF LOS ALCORNOCALES ABSTRACT:We present the results of the diverse studies of populations of birds realized in the Catalan cork oaks, especially for the specific richness. Provided that the studies published up to the moment in this matter were recounted to the breeding station (spring), we present the information gathered in the cork oaks of Gavarres (peninsular NE), during the winter station. Likewise, the diverse typologies of cork oaks that are in Catalonia, forests in active management and therefore without understory and forests left in that the biomass of the understory are maximum, are analyzed. We present the results of the comparative between both typologies of exploitation when there is applied an index of conservation of the avifauna, based on the richness of each of the registered species, the presence of species threatened according to the criteria of the UICN (SPEC) and his category of threat (non-SPEC, SPEC 3, SPEC 2 and SPEC 1). The obtained results show as the left exploitations have an index of conservation of avifauna higher than the forests in active exploitation. These results are dis-

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Rareza, estatus de conservación y sus determinantes ecológicos. Revisión de su aplicación a escala regional

Cited by 5 publications

References 94 publications

The isolated rocky outcrops of northeastern Argentina and their role on the herpetofauna conservation

The isolated rocky outcrops of northeastern Argentina and their role on the herpetofauna conservation

Geographic patterns of vertebrate diversity and identification of relevant areas for conservation in Europe

Gestión del bosque mediterráneo y conservación de la avifauna: el caso de los alcornocales

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