Identification of Potential Sea Turtle Bycatch Hotspots Using a Spatially Explicit Approach in the Yucatan Peninsula, Mexico

Cuevas, Eduardo; Guzmán-Hernández, Vicente; Uribe-Martínez, Abigail; Raymundo-Sánchez, Ana; Herrera-Pavón, Roberto L.

doi:10.2744/ccb-1263.1

Cited by 16 publications

(18 citation statements)

References 39 publications

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“…The weights of the stages (λ i in Eq. 2) were 0.6 for long-term aggregations (feeding), 0.3 for internesting areas and 0.1 for migratory routes (modified from Cuevas et al 2018a). The main indicator for these weights was the time spent during each stage at a given site.…”

Section: Sens = Attmentioning

confidence: 99%

“…The first identified threat was sea turtle bycatch, and a modification of catch per unit effort (CPUE) reported by Cuevas et al (2018a) was selected as an indicator of fishing intensity in the study area for the quantitative assessment. The spatial layer was built using historical data summarized over 10 yr from the National Yearbooks of Fisheries in Mexico and the National Fishing Chart (Diario Oficial de la Federación 2012), as well as from the available literature on fishing effort in the Gulf of Mexico (Noguez Fuentes et al 2007).…”

Section: Exposurementioning

confidence: 99%

“…Therefore, the trends (slope of a linear regression model) in the different nesting areas we studied were used to quantify a mean indicator value for the linked feeding/long-term aggregation areas. We used publicly available data for the indicator of nesting activity per beach from The State of the World's Sea Turtles (SWOT; http://seamap.env.duke.edu/swot), and completed an estimated time series for key nesting beaches using historic data reported for Mexican nesting beaches (Cuevas et al 2018b).…”

Section: Stability Coefficientmentioning

confidence: 99%

“…In the southern Gulf of Mexico, some studies have assessed the impacts of sea turtle bycatch, and Cuevas et al (2018a) noted the same zones around the Yucatan Peninsula as the most threatening areas for sea turt les. As this threat had the greatest weight at several sites in the present study, the occurrence of high levels of fishing effort (with its corresponding high weight) strongly de fines the high vulnerability values, particularly when it is also present alongside other threats.…”

Section: Spatially Explicit Ecological Vulnerability Of Sea Turtlesmentioning

confidence: 99%

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Ecological vulnerability of two sea turtle species in the Gulf of Mexico: an integrated spatial approach

Cuevas¹,

Liceaga-Correa²,

Uribe-Martínez³

2019

Endang. Species. Res.

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Changes in ecological attributes as a result of anthropogenic activities and climatic forces can jeopardize biodiversity, so these potential impacts must be evaluated for conservation. Integrating the different components of a large ecosystem can, however, pose a methodological challenge. When evaluating the sensitivity of a system, the level of stress imposed by a threat and the system's ability to deal with pressures ultimately define its actual condition. The objective of this study was to assemble a spatially explicit quantitative approach for evaluating the ecological vulnerability of 2 sea turtle species (Eretmochelys imbricata and Chelonia mydas). We used a method that combined the use of an open source planning tool (Conservation Action Planning) and spatial multicriteria analysis to determine the total cumulative ecological vulnerability to multiple threats for each species individually and for both species combined. The spatially explicit outputs were supported by hard data and expert knowledge, including the cumulative ecological vulnerability of each species to multiple threats. For each species, we identified areas in the Gulf of Mexico where individual threats have a potential impact and also determined high vulnerability locations. This spatially explicit approach is important when assessing ecological vulnerability and risk, it is versatile and easily reproducible for other organisms, and can be an important tool in supporting the conservation and management of endangered species.

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Section: Sens = Attmentioning

confidence: 99%

Section: Exposurementioning

confidence: 99%

Section: Stability Coefficientmentioning

confidence: 99%

Section: Spatially Explicit Ecological Vulnerability Of Sea Turtlesmentioning

confidence: 99%

See 2 more Smart Citations

Ecological vulnerability of two sea turtle species in the Gulf of Mexico: an integrated spatial approach

Cuevas¹,

Liceaga-Correa²,

Uribe-Martínez³

2019

Endang. Species. Res.

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“…This difference in phytoplankton groups and taxonomy significantly influences upper trophic levels in the pelagic food webs (i.e., trophic cascade; [43,137]). For instance, despite the overall oligotrophic conditions of the YP coastal waters, especially in the Caribbean region, biodiversity [138] and secondary production is high, characterized by extensive coral reefs [139][140][141][142] and charismatic filter-feeding, e.g., whale sharks and rays [47,143], and sea turtles [144]. Further, key ecosystems services, such as artisanal and industrial fisheries, represent a critical economic source providing a combined value (i.e., Campeche, Yucatan, Quintana Roo) ranging from US $130-180 million in the period from 2006-2014 [145,146]; these fisheries include shrimp [147], red grouper [45,148], sea cucumber [46], octopus [149,150], and lobster [151,152].…”

Section: Tc Impacts On Terrestrial Vegetation and Chl-a Concentration In Coastal Watersmentioning

confidence: 99%

Tropical Cyclone Landfall Frequency and Large-Scale Environmental Impacts along Karstic Coastal Regions (Yucatan Peninsula, Mexico)

et al. 2020

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Tropical cyclones (TCs) are natural systems that develop over ocean basins and are key components of the atmospheric activity during the warm season. However, there are still knowledge gaps about the combined positive and negative TC impacts on the structure and function of coastal socio-ecosystems. Using remote sensing tools, we analyzed the frequency, trajectory, and intensity of 1894 TCs from 1851–2019 to identify vulnerable “hotspots” across the Yucatan Peninsula (YP), Mexico. A total of 151 events hit the YP, with 96% of landings on the eastern coast. We focused on three major hurricanes (Emily and Wilma, 2005; Dean, 2007) and one tropical storm (Stan, 2005) to determine the impacts on cumulative precipitation, vegetation change, and coastal phytoplankton (Chl-a) distribution across the YP. Despite a short inland incursion, Wilma’s environmental damage was coupled to strong winds (157–241 km/h), slow motion (4–9 km/h), and heavy precipitation (up to 770 mm). Because of an extensive footprint, Wilma caused more vegetation damage (29%) than Dean (20%), Emily (7%), and Stan (2%). All TCs caused a Chl-a increase associated to submarine discharge and upwelling off the peninsula coastlines. Disaster risk along the coast underscores negative economic impacts and positive ecological benefits at the regional scale.

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Genetic structure, origin, and connectivity between nesting and foraging areas of hawksbill turtles of the Yucatan Peninsula: A study for conservation and management

Labastida‐Estrada

Machkour‐M’Rabet

Díaz‐Jaimes

et al. 2019

Aquatic Conservation

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1. Anthropogenic activities have resulted in declines in many marine turtle populations. Their complex life cycle (e.g. female philopatry, hatchling migration, adult movements between breeding and foraging areas) makes it difficult to fully understand some of the biological implications of human impacts on their populations, but genetic tools can play a major role in understanding population dynamics and thus improve conservation and management strategies. 2. Using the mitochondrial DNA control region, this study examines the composition, population structure, and connectivity between rookeries and foraging aggregations, in addition to their relationship with Atlantic rookeries and foraging areas of the hawksbill turtle in the Yucatan Peninsula. 3. Haplotype composition of rookeries showed EiA22, EiA39, and EiA41 as endemic haplotypes and revealed a segregation between the Gulf of Mexico and the Yucatan and Quintana Roo rookeries, defining two management units. Foraging aggregations present 15 haplotypes, some common for Atlantic and others for Mexican rookeries. Considering the Gulf of Mexico versus the Mexican Caribbean, significant population genetic structure was revealed, inferring a differential recruitment of hawksbill turtles. 4. Rookery-centric mixed-stock analysis reveals a high contribution of Mexican turtles to local foraging aggregations, principally in the Gulf of Mexico. Foraging-groundcentric mixed-stock analysis showed that the Gulf of Mexico foraging aggregation is predominantly composed of individuals from local rookeries, whereas Mexican Caribbean foraging groups have a mixed composition with individuals from Barbados, Brazil, and Puerto Rico rookeries. The connectivity between rookeries and foraging aggregations suggests that the ocean currents and swimming behaviour influence the distribution of hawksbill turtles. 5. Our results highlighted the importance in identifying management units in nesting and foraging areas to develop monitoring and management programmes at

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Identification of Potential Sea Turtle Bycatch Hotspots Using a Spatially Explicit Approach in the Yucatan Peninsula, Mexico

Cited by 16 publications

References 39 publications

Ecological vulnerability of two sea turtle species in the Gulf of Mexico: an integrated spatial approach

Ecological vulnerability of two sea turtle species in the Gulf of Mexico: an integrated spatial approach

Tropical Cyclone Landfall Frequency and Large-Scale Environmental Impacts along Karstic Coastal Regions (Yucatan Peninsula, Mexico)

Genetic structure, origin, and connectivity between nesting and foraging areas of hawksbill turtles of the Yucatan Peninsula: A study for conservation and management

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