Characterization of Antillean manatee (Trichechus manatus manatus) habitat and resources availability
Dear Colleagues, We are pleased to announce our new publication: Suárez-Achaval, R.G., Serrano, A., Chamorro-Florescano, I. et al. Characterization of Antillean manatee (Trichechus manatus manatus) habitat and resources availability in the Alvarado Lagoon System, Veracruz. Eur J Wildl Res 69, 10 (2023). https://doi.org/10.1007/s10344-022-01639-x Abstract Historically, the Antillean manatee (Trichechus manatus manatus) was distributed along the coastline comprised by the five Mexican states that border the Gulf of Mexico. However, the few healthy populations that currently exist in Mexico are now limited to relatively isolated regions with very specific habitat characteristics. In the state of Veracruz, a limited number of individuals are found in the Alvarado Lagoon System (ALS), located in the coastal zone of southern central Veracruz. The aim of this study was to characterize manatee habitat in the ALS. Transects were established in the ALS and 503 points selected and sampled along these transects, producing data pertaining to salinity, depth, dissolved oxygen, total dissolved solids, surface water temperature, pH, bottom type, and conductivity. A total of 45 outings were conducted, with a total sampling effort of 332.36 h. The average physicochemical parameters found were as follows: salinity 3.33 ppm, total dissolved solids 0.51 g/l, temperature 26.29 °C, dissolved oxygen 0.51%, pH 7.55, and oxidation–reduction potential 417.04 mV. Thirteen manatees were observed, mostly (84.6%) during the cold, where the parameters of electrical conductivity, salinity, total dissolved solids, dissolved oxygen, temperature, and oxidation–reduction potential showed differences between the sampled seasons, and in the lagoons with a presence of the floating and submersible vegetation species that form part of manatees’ diet. This study shows that the ALS presents lagoons that favor the presence of the Antillean manatee, further narrowing the distribution of the species within the same ALS in the southern central zone of the state of Veracruz. The article can be found at the following link: https://link.springer.com/article/10.1007/s10344-022-01639-x [https://media.springernature.com/w200/springer-static/cover/journal/10344.jpg]<https://link.springer.com/article/10.1007/s10344-022-01639-x> Characterization of Antillean manatee (Trichechus manatus manatus) habitat and resources availability in the Alvarado Lagoon System, Veracruz - European Journal of Wildlife Research<https://link.springer.com/article/10.1007/s10344-022-01639-x> Historically, the Antillean manatee (Trichechus manatus manatus) was distributed along the coastline comprised by the five Mexican states that border the Gulf of Mexico. However, the few healthy populations that currently exist in Mexico are now limited to relatively isolated regions with very specific habitat characteristics. In the state of Veracruz, a limited number of individuals are found in the Alvarado Lagoon System (ALS), located in the coastal zone of southern central Veracruz. The aim of this study was to characterize manatee habitat in the ALS. Transects were established in the ALS and 503 points selected and sampled along these transects, producing data pertaining to salinity, depth, dissolved oxygen, total dissolved solids, surface water temperature, pH, bottom type, and conductivity. A total of 45 outings were conducted, with a total sampling effort of 332.36 h. The average physicochemical parameters found were as follows: salinity 3.33 ppm, total dissolved solids 0.51 g/l, temperature 26.29 °C link.springer.com Feel free to contact me to request a pdf or for any question regarding our work at: arserrano@uv.mx<mailto:arserrano@uv.mx> Regards, [cid:8becafb2-fc97-4ffd-b3ce-b66dcc242914]
Dear Colleagues, We are pleased to announce our new publication: Coronel-Montigel, M., Serrano, A., Basañez-Muñoz, A., Ceresa, I. & Alcántar, A. (2023). Abundance of the bottlenose dolphin (Tursiops truncatus) and proposal for a priority area of conservation in the Southern Gulf of Mexico marine ecoregion. Aquatic Conservation: Marine and Freshwater Ecosystems, 1–14. https://doi.org/10.1002/ aqc.3974 Abstract 1. Demographic studies are crucial for assessment of the status of dolphin populations and their relationship with anthropogenic activities as a way to make effective management and conservation decisions. In the Gulf of Mexico, the interaction between bottlenose dolphins (Tursiops truncatus) and anthropogenic activities merits special attention. The objective of this study was therefore to determine the annual abundance and area of preference of the coastal population of T. truncatus (period 2005–2020), and to delimit a priority area for its conservation in the Southern Gulf of Mexico marine ecoregion. 2. Abundance was calculated using the Jolly–Seber model and habitat preference was determined per climatic season (dry, rainy and cold northerly fronts) as a function of environmental variables. The association between anthropogenic activities and dolphin distribution was studied and the priority area delimited using potential distribution models. 3. Off the coasts of Tuxpan and Tamiahua, the results show that the dolphin population numbered 306 individuals (95% CI: 162.97; 607.33) and has remained relatively constant over time. 4. The pattern of dolphin distribution varied between seasons, possibly owing to changes in food availability. However, river mouths and lagoons are of importance to T. truncatus throughout the year. On the other hand, fishing and maritime traffic can potentially affect this species. 5. Finally, this study shows that the delimitation of sites of importance for T. truncatus is a strategic tool with which to help conserve the species and associated coastal ecosystems. The article can be found at the following link: https://onlinelibrary.wiley.com/share/author/HWBTTT8UMNHDPD38A37M?target=10.... Feel free to contact me to request a pdf or for any question regarding our work at: arserrano@uv.mx<mailto:arserrano@uv.mx> Regards, [cid:8becafb2-fc97-4ffd-b3ce-b66dcc242914]
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Serrano Solis Arturo