The energy flow through coastal Anthropocene biotas

Riascos, José M.; Hopfe, Charlotte; Thomas, Chris D.

doi:10.1002/fee.2151

Cited by 2 publications

(2 citation statements)

References 11 publications

(8 reference statements)

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“…In the big picture, our results add to mounting evidence that threatened species are either behaving as urban-dwelling animals or developing local urban populations (Busschots et al, 2020;Geary et al, 2021;Ives et al, 2016;Maclagan et al, 2018;Planchuelo et al, 2019;Van Helden et al, 2020). This trend is not new (e.g., Luniak, 1996;Witt, 1991), but it has been largely neglected in et al (2000) as compositionalism, in which human impact fall outside the sphere of interest or even ignite rejection to biodiversity thriving in human-dominated systems (Riascos et al, 2020). Recognizing that the future of some threatened species may be defined beyond the boundaries of parks and reserves is an uncomfortable truth that emphasized the long-established need to address conservation in human-dominated systems (see Robinson, 2006).…”

Section: Con Cluding Remark Smentioning

confidence: 48%

“…This trend is not new (e.g., Luniak, 1996; Witt, 1991), but it has been largely neglected in conservation biology, epitomizing a long intellectual tradition in conservation biology of focusing on wilderness, wild species in natural ecosystems – a philosophical approach termed by Callicott et al. (2000) as compositionalism, in which human impact fall outside the sphere of interest or even ignite rejection to biodiversity thriving in human‐dominated systems (Riascos et al., 2020). Recognizing that the future of some threatened species may be defined beyond the boundaries of parks and reserves is an uncomfortable truth that emphasized the long‐established need to address conservation in human‐dominated systems (see Robinson, 2006).…”

Section: Discussionmentioning

confidence: 99%

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Is the threatened land crab Cardisoma guanhumi conquering human‐dominated systems?

Riascos,

Obonaga,

Ramos

2024

Ecology and Evolution

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Land use changes are heralded as a major driver of biodiversity loss. However, recent findings show that cities, perhaps the most radical habitat transformation, sustain increasing numbers of threatened species. This emerging trend has been mostly chronicled for vertebrates from landlocked cities, although loss of biodiversity and rates or urbanization are higher in coastal marine systems. To advance our understanding on how threatened species may conquer human‐dominated systems, we studied the threatened edible crab Cardisoma guanhumi and assessed how it is proliferating in croplands and urban systems at different spatial scales and whether populations show consequences of long‐term exploitation. We gathered the data on crab populations covering the whole distribution range, including three countries reporting this as a threatened species. The abundance, distribution, and size structure of crab populations among different land uses at local scales were compared and published data for populations thriving in different habitats throughout their distribution range were compiled. We found that at local scale this species is able to thrive in natural and human‐disturbed habitats, where food sources are heavily altered. At larger scales, the species showed no differences in abundance and size structure among natural and anthropogenic habitats. In areas near the southern distribution edge, crab populations were more abundant and composed of larger animals in urban areas and croplands than those in natural habitats, suggesting that human‐disturbed systems are stepping stones to extend the geographic range. However, we found a long‐term reduction in maximum body size, exacerbated by land use changes, that likely reflects exploitation regimes consistently targeting larger crabs. Despite its status as a threatened species, the long history of human exploitation combined with livestock farming practices may explain the proliferation of this crab in human‐dominated systems, which emphasize the need to consider conservation in human‐dominated systems.

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