Linking process to pattern: Causes of stream-breeding amphibian decline in urbanized watersheds

Barrett, Kyle; Helms, Brian S.; Guyer, Craig; Schoonover, Jon E.

doi:10.1016/j.biocon.2010.05.001

Cited by 60 publications

(59 citation statements)

References 27 publications

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“…Para estimar los efectos de temperatura del agua, caudal e índice de antropización sobre el crecimiento y desarrollo de las larvas se utilizó regresión lineal. Para estas regresiones se calculó la variación en crecimiento/desarrollo como la diferencia entre cualquier tamaño/estadio y el tamaño/estadio mayor alcanzado en cada sitio, siguiendo la metodología especificada por Barrett et al (2010c).…”

Section: Variables Ambientalesunclassified

“…En general, la riqueza de especies de anfibios y/o la abundancia de las especies disminuye en áreas con creciente urbanización (Estupiñán y Galatti, 1999;Willson y Dorcas, 2003;Miller et al, 2007;Barrett y Guyer, 2008;Barrett et al, 2010b). Se ha determinado además que las larvas de anfibios que se desarrollan en agua proveniente de ambientes urbanizados son más pequeñas y metamorfosean más rápido que las larvas que se desarrollan en agua de arroyos forestados no urbanos (Barrett et al, 2010b).…”

Section: Introductionunclassified

“…Se ha determinado además que las larvas de anfibios que se desarrollan en agua proveniente de ambientes urbanizados son más pequeñas y metamorfosean más rápido que las larvas que se desarrollan en agua de arroyos forestados no urbanos (Barrett et al, 2010b).…”

Section: Introductionunclassified

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Desarrollo larval de anfibios anuros en un río impactado por urbanización: efecto de factores ambientales

Ojeda

Espeche

Jofré

2016

Neotropical Biology and Conservation

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This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0), which permits reproduction, adaptation, and distribution provided the original author and source are credited. ResumenEn este trabajo se estudió el efecto de variables ambientales sobre la abundancia y el desarrollo larval de anuros, en un río urbanizado de la provincia de San Luis, Argentina. Abundancia y riqueza de larvas, temperatura del agua y caudal fueron relevados, en siete sitios con diferente grado de urbanización del río Volcán, durante cuatro meses. Las larvas se identificaron a nivel de especie, y en una muestra se midió su longitud y se estimó su estadio; se encontraron larvas de tres especies: Rhinella arenarum, Hypsiboas pulchellus y Odontophrynus occidentalis. La abundancia y riqueza de larvas variaron entre sitios y, aunque no se correlacionaron significativamente con la urbanización, fue posible identificar eventos puntuales de impacto sobre la abundancia. Las larvas de anuros crecieron y se desarrollaron en sitios con diferentes grados de perturbación, y fue posible establecer efectos del caudal, la temperatura del agua y la antropización en el crecimiento y desarrollo. Este trabajo proporciona información básica relevante sobre el desarrollo de anuros en ambientes lóticos y los efectos de variables ambientales en sitios con impacto urbano. Los conocimientos generados son de utilidad para análisis integrados de calidad ambiental y como herramientas para medidas básicas de conservación de la anurofauna nativa.Palabras clave: abundancia, larvas, impactos ambientales. AbstractIn this work we studied the effects of environmental variables on the abundance and larval development of anuran amphibians in a river impacted by urbanization in the province of San Luis, Argentina. Larval abundance and richness, water temperature and flow rate were assessed in seven sites with different degrees of urban impact along the Volcán river, during four months. Larvae were identified at the level of species, and their length was measured and their stage estimated based on a sample; larvae from three anuran species were recognized in the river: Rhinella arenarum, Hypsiboas pulchellus and Odontophrynus occidentalis. The abundance and richness of larvae varied between sites with different characteristics and, even though they were not significantly correlated with urban impact, it was possible to identify punctual events of impact on larval abundance. Anuran larvae grew and developed in sites with different degrees of perturbation. Effects of flow rate, water temperature and anthropization on growth and development were detected. This work provides basic relevant information on the development of anurans in lotic systems and on the effects of environmental variables in areas with urban impact. The generated knowledge is useful for integrated analyses of environmental quality and as a tool for basic conservation measures of the native anuran fauna.

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Section: Variables Ambientalesunclassified

Section: Introductionunclassified

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Desarrollo larval de anfibios anuros en un río impactado por urbanización: efecto de factores ambientales

Ojeda

Espeche

Jofré

2016

Neotropical Biology and Conservation

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“…There are more than two hundred salamander taxa identified in the United States, and at least 29% are ranked by NatureServe as "imperiled or critically imperiled" in a portion of their ranges (roughly equivalent to the IUCN's Red List designation of "critically endangered," "endangered," and "vulnerable") [33]. Potential and established reasons for their decline include forest fragmentation and habitat alteration [41], land use disturbance and urbanization [42,43], epidemic disease [44,45], climate change [44,46], pollutants/contaminants [44,45], acidic deposition [47,48], harvest/predation [45,49], and interactions between these factors [50]. To direct conservation and management efforts in the United States and worldwide, it is important to understand, as thoroughly and holistically as possible, the roles of environmental parameters and the impacts of human activities on salamander abundance and diversity.…”

Section: Introductionmentioning

confidence: 99%

Environmental and Anthropogenic Factors Influencing Salamanders in Riparian Forests: A Review

Clipp

Anderson

2014

Forests

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Salamanders and riparian forests are intimately interconnected. Salamanders are integral to ecosystem functions, contributing to vertebrate biomass and complex food webs in riparian forests. In turn, these forests are critical ecosystems that perform many environmental services, facilitate high biodiversity and species richness, and provide habitat to salamander populations. Due to the global decline of amphibians, it is important to understand, as thoroughly and holistically as possible, the roles of environmental parameters and the impact of human activities on salamander abundance and diversity in riparian forests. To determine the population responses of salamanders to a variety of environmental factors and anthropogenic activities, we conducted a review of published literature that compared salamander abundance and diversity, and then summarized and synthesized the data into general patterns. We identify stream quality, leaf litter and woody debris, riparian buffer width, and soil characteristics as major environmental factors influencing salamander populations in riparian forests, describe and explain salamander responses to those factors, and discuss the effects of anthropogenic activities such as timber harvest, prescribed fires, urbanization, road construction, and habitat fragmentation. This review can assist land and natural resource managers in anticipating the consequences of human activities and preparing strategic conservation plans. OPEN ACCESSForests 2014, 5 2680

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“…Barrett et al 2010), such as the nested pattern in patchy habitats. When a community is 'nested', the species present in the poor patches are sub-samples of those present in the rich ones, and the same species tend to disappear from each patch in approximately the same order (Atmar & Patterson 1993, Patterson & Atmar 2000.…”

Section: Introductionmentioning

confidence: 99%

Distribution patterns of a marsh vegetation metacommunity in relation to habitat configuration

Sebastián‐González¹,

Molina²,

Paracuellos³

2012

Aquat. Biol.

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Linking process to pattern: Causes of stream-breeding amphibian decline in urbanized watersheds

Cited by 60 publications

References 27 publications

Desarrollo larval de anfibios anuros en un río impactado por urbanización: efecto de factores ambientales

Desarrollo larval de anfibios anuros en un río impactado por urbanización: efecto de factores ambientales

Environmental and Anthropogenic Factors Influencing Salamanders in Riparian Forests: A Review

Distribution patterns of a marsh vegetation metacommunity in relation to habitat configuration

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