Underestimation of Extinction Threat to Stream‐Dwelling Amphibians due to Lack of Consideration of Narrow Area of Occupancy

Almeida‐Gomes, Mauricio; Lorini, Maria Lúcia; Rocha, Carlos Frederico Duarte; Vieira, Marcus Vinícius

doi:10.1111/cobi.12196

Cited by 26 publications

(29 citation statements)

References 21 publications

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“…Although some ecological impacts are simple and immediately apparent, others are subtle yet potentially far-reaching. Examples of the disparity between the full extent of impacts resulting from a development, and the impacts that have been accounted, are mounting [8,[12][13][14][15][16][17][18]. Accounting for enigmatic impacts is not the only challenge inherent in mitigating development impacts (e.g., [3,10,19]), but addressing it is crucial: oversights in accounting for impacts undermine the ability of mitigation strategies to achieve their objectives (e.g., [12,18]).…”

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confidence: 99%

Under the radar: mitigating enigmatic ecological impacts

Raiter

Possingham

Prober

et al. 2014

Trends in Ecology & Evolution

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Identifying the deleterious ecological effects of developments, such as roads, mining, and urban expansion, is essential for informing development decisions and identifying appropriate mitigation actions. However, there are many types of ecological impacts that slip 'under the radar' of conventional impact evaluations and undermine the potential for successful impact mitigation (including offsets). These 'enigmatic' impacts include those that are small but act cumulatively; those outside of the area directly considered in the evaluation; those not detectable with the methods, paradigms, or spatiotemporal scales used to detect them; those facilitated, but not directly caused, by development; and synergistic impact interactions. Here, we propose a framework for conceptualising enigmatic impacts and discuss ways to address them.

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confidence: 99%

Under the radar: mitigating enigmatic ecological impacts

Raiter

Possingham

Prober

et al. 2014

Trends in Ecology & Evolution

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“…Small population sizes are apparently more common in stream-dwelling amphibians in the Atlantic Forest (Almeida-Gomes et al, 2014) than in species in lentic habitat. The population in this study is one of the few currently known in Brazil (see Iop et al, 2009;Lucas and Marocco, 2011;Lucas and Garcia, 2011;Lipinski et al, 2012;Bastiani and Lucas, 2013).…”

Section: Discussionmentioning

confidence: 98%

“…Future policy and research efforts could focus on predicting the likely geographic distribution of H. curupi in southern Brazil. Conservation goals should include a better understanding of the structure and dynamics of populations at a landscape scale, and implementation of plans for riparian zone restoration and reconnection of forest fragments (Becker et al, 2010;Toledo et al, 2010;Almeida-Gomes et al, 2014). Further knowledge of H. curupi biology and habitat requirements may aid the design of enhanced conservation strategies for this species in the study region.…”

Section: Discussionmentioning

confidence: 99%

“…Stream-dwelling amphibians are continuously impacted by the loss of riparian forest, pollution, and damming, and are particularly vulnerable to environmental change due to strict association with specific niches (Becker et al, 2010;Almeida-Gomes et al, 2014). Understanding factors that contribute to spatial and temporal variation in species composition is a central question in ecology (Dodd Jr., 2010), and this knowledge is essential for evaluation of the health of populations (Bailey and Nichols, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Ecologia e história natural de Hypsiboas curupi (Anura, Hylidae): um anfíbio endêmico do sul da Mata Atlântica

Bastiani

Cavasotto²,

Ferreira³

et al. 2016

Neotropical Biology and Conservation

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Data on habitat use and life history are essential for evaluation of the conservation status of species, and may direct policy for preservation of natural environments. Over the course of a year, we investigated populations of Hypsiboas curupi regarding (i) nighttime activity patterns; (ii) associations with climatic variables; (iii) the spatial distribution patterns of males and females with respect to microhabitat use; and (iv) variation in body size. The study was carried out from August 2010 to July 2011 in the Parque Estadual Fritz Plaumann, a seasonal deciduous forest fragment in the western region of Santa Catarina, southern Brazil. Calling activity was highest from August to November. The number of calling males was highest at 23h, and the frequency of occurrence was influenced by the air humidity. Calling males, non-calling males, and females differed in their distance from the bank and substrate type used. Females were significantly larger and heavier than males. Our results indicate that H. curupi is highly dependent on bank vegetation, and that changes in riparian vegetation structure due to human activity can result in the loss of sites for calling and oviposition, and may reduce availability of food and shelter.Keywords: life history, riparian forest, stream-dwelling amphibians, seasonal deciduous forest, microhabitat use. ResumoInformações sobre o habitat e história de vida são essenciais para avaliar o status de conservação das espécies e definir ações para a preservação dos ambientes naturais. Ao longo de um ano, investigamos em populações de Hypsiboas curupi (i) o padrão de atividade noturna; (ii) relações com variáveis climáticas; (iii) o padrão de distribuição espacial de machos e fêmeas em termos de uso de microambientes; e (iv) variação no tamanho corporal. Conduzimos o estudo de agosto de 2010 a julho de 2011 no Parque Estadual Fritz Plaumann, um fragmento de Floresta Estacional Decidual na região oeste de Santa Catarina, sul do Brasil. O período de maior atividade foi de agosto a novembro. O maior número de machos vocalizando ocorreu às 23h e a frequência de ocorrência foi influenciada pela umidade do ar. Machos vocalizantes, não-vocalizantes e fêmeas foram discriminados pela distância da margem e tipo de substrato utilizado. Fêmeas foram significativamente maiores e mais pesadas do que machos. Os resultados indicam que H. curupi é altamente dependente da vegetação marginal. Assim, mudanças na estrutura da mata ciliar devido a ações humanas podem resultar na perda de sítios de canto e oviposição e reduzir a disponibilidade de alimento e abrigo.Palavras-chave: história de vida, mata ciliar, anfíbios de riachos, floresta estacional decidual, uso de microambiente.Ecology and natural history of Hypsiboas curupi (Anura, Hylidae): An endemic amphibian to the southern Atlantic Forest Ecologia e história natural de Hypsiboas curupi (Anura, Hylidae): um anfíbio endêmico do sul da Mata Atlântica Ecology and natural history of Hypsiboas curupi (Anura, Hylidae): An endemic amphibian to the so...

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“…These specific environments may also provide more realistic assessments of extinction threats faced by stream-dwelling amphibians in the Atlantic Forest and other biomes (ALMEIDA-GOMES et al 2014a). In a 10-year survey in the same region, (ALMEIDA-GOMES et al 2014b), 73 amphibian species were registered, 10 of which are endemic to the state of Rio de Janeiro.…”

Section: Discussionmentioning

confidence: 99%