scholarly journals Polychaete (Annelida) Diversity Patterns in Southern Gulf of Mexico: The Influence of Spatial Structure and Environmental Variables

Diversity ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 425
Author(s):  
Benjamín Quiroz-Martínez ◽  
Pablo Hernández-Alcántara ◽  
David Alberto Salas-de-León ◽  
Vivianne Solís-Weiss
Keyword(s):  
Gulf Of Mexico ◽  
Spatial Structure ◽  
Environmental Variables ◽  
Variation Partitioning ◽  
Spatial Diversity ◽  
Relative Importance ◽  
Polychaete Species ◽  
Significance Level ◽  
Diversity Patterns ◽  
Southern Gulf Of Mexico

A comprehensive database was built to examine the spatial diversity patterns of polychaete species from the continental shelf in Southern Gulf of Mexico. Using Cluster and nMDS analysis we found the composition of polychaete species to be different between the terrigenous and carbonate regions of the Gulf. To test the relative importance of spatial and environmental components in the polychaetae community structure in the Southern Gulf of Mexico, we examined the spatial relationships between polychaetae assemblages and environmental variables over broad geographical scales. A distance-based redundancy analysis (dbRDA) and variation partitioning was used to quantify the relative importance of these explanatory variables on the spatial variations of species richness and composition. Variation partitioning is an important tool to investigate the importance of spatial structure to species distribution in communities, but it has not yet been used in marine ecosystems. The significance level of spatial and environmental components to the distribution of polychaete species showed that the combined effect of spatial processes and sediment characteristics explained a higher percentage of variance than those parameters could alone.

scholarly journals Relative importance of dynamic and static environmental variables as predictors of amphibian diversity patterns

2010 ◽  
Vol 36 (6) ◽  
pp. 650-658 ◽  
Author(s):  
Carola Gómez-Rodríguez ◽  
Carmen Díaz-Paniagua ◽  
Javier Bustamante ◽  
Laura Serrano ◽  
Alexandre Portheault
Keyword(s):  
Environmental Variables ◽  
Relative Importance ◽  
Diversity Patterns

Depth-range distribution and diversity patterns of a polychaete (Annelida) community in the continental shelf of the Southern Gulf of Mexico

2022 ◽  
pp. 107739
Author(s):  
Benjamín Quiroz-Martínez ◽  
Pablo Hernández-Alcántara ◽  
David Alberto Salas-de León ◽  
Vivianne Solís-Weiss ◽  
María Adela Monreal-Gómez
Keyword(s):  
Gulf Of Mexico ◽  
Continental Shelf ◽  
Depth Range ◽  
Diversity Patterns ◽  
Range Distribution ◽  
Southern Gulf Of Mexico

scholarly journals The Relative Importance of Human Disturbance, Environmental and Spatial Factors on the Community Composition of Wetland Birds

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3448
Author(s):  
Seid Tiku Mereta ◽  
Pieter Lemmens ◽  
Luc De Meester ◽  
Peter L. M. Goethals ◽  
Pieter Boets
Keyword(s):  
Community Composition ◽  
Human Disturbance ◽  
Environmental Variables ◽  
Variation Partitioning ◽  
Bird Species ◽  
Bird Community ◽  
Minor Role ◽  
Compositional Variation ◽  
Relative Importance ◽  
Spatial Factors

The present study investigates the relative importance of human disturbance, local environmental and spatial factors on variations in bird community composition in natural Ethiopian wetlands with high biodiversity conservation value. We quantified bird abundances, local environmental variables and human disturbances at 63 sites distributed over ten wetlands in two subsequent years. Variation partitioning analyses were used to explore the unique and shared contributions of human disturbance, local environmental variables and spatial factors on variations in community compositions of wetland bird species. Local environmental variables explained the largest amount of compositional variation of wetland bird species. Productivity-related variables were the most important local environmental variables determining bird community composition. Human disturbance was also an important determinant for wetland bird community composition and affected the investigated communities mainly indirectly through its effect on local environmental conditions. Spatial factors only played a minor role in variations in bird community composition. Our study highlights the urgent need for integrated management approaches that consider both nature conservation targets and socio-economic development of the region for the sustainable use and effective conservation of wetland resources.

scholarly journals Comparison of pteropod assemblages and their relationship with environmental variables in the southern Gulf of Mexico

2018 ◽  
Author(s):  
H López-Arellanes ◽  
R Funes-Rodríguez ◽  
C Flores-Coto ◽  
F Zavala-García ◽  
M L Espinosa-Fuentes
Keyword(s):  
Gulf Of Mexico ◽  
Environmental Variables ◽  
Southern Gulf Of Mexico

scholarly journals Critical In-Water Habitats for Post-Nesting Sea Turtles from the Southern Gulf of Mexico

2021 ◽  
Vol 9 (8) ◽  
pp. 793
Author(s):  
Abigail Uribe-Martínez ◽  
María de los Angeles Liceaga-Correa ◽  
Eduardo Cuevas
Keyword(s):  
Gulf Of Mexico ◽  
Marine Ecosystem ◽  
Satellite Telemetry ◽  
Marine Turtle ◽  
Home Ranges ◽  
The Bahamas ◽  
Turtle Species ◽  
Southern Gulf Of Mexico ◽  
Large Marine Ecosystem ◽  
Physical Features

Marine turtles are globally endangered species that spend more than 95% of their life cycle in in-water habitats. Nevertheless, most of the conservation, recovery and research efforts have targeted the on-land habitats, due to their easier access, where adult females lay their eggs. Targeting the large knowledge gaps on the in-water critical habitats of turtles, particularly in the Large Marine Ecosystem Gulf of Mexico, is crucial for their conservation and recovery in the long term. We used satellite telemetry to track 85 nesting females from their beaches after they nested to identify their feeding and residency habitats, their migratory corridors and to describe the context for those areas. We delimited major migratory corridors in the southern Gulf of Mexico and West Caribbean and described physical features of internesting and feeding home ranges located mainly around the Yucatan Peninsula and Veracruz, Mexico. We also contributed by describing general aggregation and movement patterns for the four marine turtle species in the Atlantic, expanding the knowledge of the studied species. Several tracked individuals emigrated from the Gulf of Mexico to as far as Nicaragua, Honduras, and the Bahamas. This information is critical for identifying gaps in marine protection and for deciphering the spatial connectivity in large ocean basins, and it provides an opportunity to assess potential impacts on marine turtle populations and their habitats.

Morphological variations of Phrosina semilunata Risso, 1822 juveniles (Crustacea: Amphipoda: Hyperiidea), new evidence from the Gulf of Mexico

Zootaxa ◽  
2021 ◽  
Vol 4995 (3) ◽  
pp. 594-600
Author(s):  
MARCO VIOLANTE-HUERTA ◽  
LAURA SANVICENTE-AÑORVE ◽  
MARGARITA HERMOSO-SALAZAR ◽  
AURORA MARRÓN-BECERRA
Keyword(s):  
Gulf Of Mexico ◽  
Monotypic Genus ◽  
Stages Of Development ◽  
Morphological Variations ◽  
Stages Of Growth ◽  
Early Stages ◽  
Southern Gulf Of Mexico ◽  
New Evidence ◽  
Lack Of Knowledge

Lack of knowledge of morphological variations during growth of amphipod crustaceans can result in misidentification of species. In this study, we advance the knowledge of morphological variations of juveniles of the monotypic genus Phrosina Risso, 1822 collected in the oceanic province of the southern Gulf of Mexico. The juveniles differed from the adults mainly in the morphology of pereopods 3 & 4 in that the carpal process is parallel to the propodus, also the rami of the pleopoda consist of only four segments, uropoda 3 are more lanceolate, and the uropoda bear a large prominent spine terminally. These morphological variations have not been described for the species previously. Therefore, the current observations enrich the description of P. semilunata in the early stages of growth and support the need for further taxonomical studiest that could help identify species at different stages of development.  

Distribution of pathogenic vibrios and Vibrio spp. in the water column and sediment samples from the southern Gulf of Mexico

2021 ◽  
Vol 173 ◽  
pp. 113116
Author(s):  
Johanna Bernáldez-Sarabia ◽  
Marcial L. Lizárraga-Partida ◽  
Edna L. Hernández-López ◽  
Jahaziel Gasperin-Bulbarela ◽  
Alexei F. Licea-Navarro ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Water Column ◽  
Sediment Samples ◽  
Southern Gulf Of Mexico ◽  
Pathogenic Vibrios ◽  
Vibrio Spp
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