Occurrence

Temporal and spatial variation of waterbirds at Sayula Lagoon, Jalisco, Mexico: a five-year winter season study

Dernière version Publié par Museu de Ciències Naturals de Barcelona le 8 juin 2022 Museu de Ciències Naturals de Barcelona

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Description

Waterbird surveys were conducted monthly over five winters, from October to March 2004-2007 and from October to March 2009-2011, as the migratory species are present in the study area in these months. Thirty (1 ha) permanent plots were randomly stratified using a numbered grid for each zone type. Each plot was located at a minimum distance of 500 m from each other in order to avoid double counts of the same individuals, following Ojasti and Dallmeier (2000). Plots were delimited with red and yellow sticks to allow their rapid location. Observations were made in the eight hours after sunrise. We recorded all the bird species seen and total abundance was also recorded. The block method (Howes and Bakewell, 1989) was used to estimate numbers whenever large flocks (> 300 birds) were present. The seasonal status of species was contrasted with those published in Howell and Webb (2001). The category of species risk was assigned using the Mexican Law (NOM-059-SEMARNAT-2010) and the IUCN Red List of Threatened Species. The on-line taxonomic Check-list of North American birds (AOU, 2015) was used.

Enregistrements de données

Les données de cette ressource occurrence ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 2 284 enregistrements.

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Versions

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Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Güitrón-López, M. M., Huerta-Martínez, F. M., Báez-Montes, O., Estrada-Sillas, Y. F., Chapa-Vargas, L., 2018. Temporal and spatial variation of waterbirds at Sayula Lagoon, Jalisco, Mexico: a five-year winter season study. Museu de Ciències Naturals de Barcelona. Occurrence/Dataset: https://doi.org/10.15470/cuwqgi

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est Museu de Ciències Naturals de Barcelona. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : 1be624ad-2628-4a57-a68f-0fea6e3fba31.  Museu de Ciències Naturals de Barcelona publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF Spain.

Mots-clé

Occurrence; Avifauna; Richness; Ramsar site; Waterbirds; Wetlands; Occurrence

Contacts

Y. F. Estrada-Sillas
  • Créateur
  • Personne De Contact
M. M. Güitrón-López
  • Créateur
  • Personne De Contact
Centro Universitario de Ciencias Biológicas y Agropecuarias
Universidad de Guadalajara
Camino Ramón Padilla Sánchez #2100 Nextipac
45110 Las Agujas, Zapopan
Jalisco
MX
O. Báez-Montes
  • Créateur
  • Personne De Contact
F. M. Huerta-Martínez
  • Fournisseur Des Métadonnées
  • Créateur
  • Personne De Contact
Centro Universitario de Ciencias Biológicas y Agropecuarias
Universidad de Guadalajara
Camino Ramón Padilla Sánchez #2100 Nextipac
Las Agujas, Zapopan
Jalisco
MX
L. Chapa-Vargas
  • Créateur
  • Personne De Contact
Montse Ferrer
  • Publicateur
Managing Editor AMZ
Arxius de Miscel·lània Zoològica, Museu de Ciències Naturals de Barcelona
Psg Picasso s/n.
08003 Barcelona
ES

Couverture géographique

Sayula Lagoon in the state of Jalisco in west central Mexico

Enveloppe géographique Sud Ouest [19,906, -103,62], Nord Est [20,175, -103,42]

Couverture taxonomique

Waterbirds at Sayula Lagoon, Jalisco, Mexico

Class Aves
Order Anseriformes, Charadriiformes, Pelecaniformes, Suliformes, Podecipediformes, Gruiformes
Family Anatidae, Ardeidae, Charadriidae, Jacanidae, Laridae, Pelecanidae, Phalacrocoracidae, Podicipedidae, Rallidae, Recurvirostridae, Scolopacidae, Threskiornithidae

Couverture temporelle

Date de début / Date de fin 2004-10-01 / 2007-03-31
Date de début / Date de fin 2009-10-01 / 2011-03-31

Méthodes d'échantillonnage

Thirty (1 ha) permanent plots were randomly stratified using a numbered grid for each zone type. Each plot was located at a minimum distance of 500 m from each other in order to avoid double counts of the same individuals, following Ojasti and Dallmeier (2000). Plots were delimited with red and yellow sticks to allow their rapid location. Observations were made in the eight hours after sunrise. We recorded all the bird species seen and total abundance was also recorded. The block method (Howes and Bakewell, 1989) was used to estimate numbers whenever large flocks (> 300 birds) were present. The seasonal status of species was contrasted with those published in Howell and Webb (2001). The category of species risk was assigned using the Mexican Law (NOM-059-SEMARNAT-2010) and the IUCN Red List of Threatened Species. The on-line taxonomic Check-list of North American birds (AOU, 2015) was used. All plots were classified as one of the five zones according to Colwell and Taft (2000), with modifications as follows: Deep Zone (DEEZ > 100 cm), Aquatic Zone (AQUZ > 20 y < 100 cm), Shallow Zone (SHAZ < 20 cm), Muddy Zone (zone with wet soil and some small waterlogging) (MUDZ) and Sandy Zone (zone with dry soil) (SANZ). This classification was possible because during the observation period (October-March) in each study year, the water level remained the same. We recorded the area or areas in which each observed individual bird it was observed

Etendue de l'étude Waterbird surveys were conducted monthly over five winters, from October to March 2004-2007 and from October to March 2009-2011, as the migratory species are present in the study area in these months.

Description des étapes de la méthode:

  1. Temporal changes were analyzed by comparing seasons and months, and spatial changes were analyzed by comparing the zones in the study area. We also studied attributes of community structure. Richness (S), was estimated through species accumulation curves using EstimateS v, 9.1.0, (Colwell, 2009). Using abundance (numbers of individuals) data and the same software, rarefaction curves were performed to compare richness between zones, months and sampled seasons. In the latter analysis, we compared the richness mean values and their 84% confidence intervals at p=0.05 (MacGregor-Fors and Payton, 2013). Species relative abundance was estimated according to the following categories: abundant (90-100 %), common (65-89 %), moderately common (31-64 %), uncommon (10-30 %), and rare (1-9 %). These percentages were obtained for each species as the number of individuals of a species divided by the total number of individuals considering all species and multiplying by 100 (Pettingill, 1969). Relative frequency was estimated to determine species representativeness over time and the following categories were assigned: very frequent (0.76-1), frequent (0.51-0.75), moderately frequent (0.26-0.50), and sporadic (0- 0.25). This estimate refers only to the number of plots containing a given species divided by the total number of plots, which is not redundant with abundance because it does not refer to individuals (Krebs, 1985). In order to ensure non-redundant data, a fixed time period was assigned (10 minutes) for observation and the distance between plots was longer than 500 m. An abundance data matrix - estimated with the Bray-Curtis’ index using the 4th root data transformation to reduce the contribution of abundant species - was implemented to perform the following analyses using PRIMER 6 (Clarke and Gorley, 2005). A nonmetric multidimensional scaling (NMDS) complemented with hierarchical cluster analysis (Bray-Curtis´ index using average group linkage methods, Clarke and Warwick, 2001) was implemented to compare species composition between zones, months, and seasons. To assess significant differences between groups of samples, a one-way non-parametric similarity analysis was performed (ANOSIM) using 10,000 permutations (Clarke and Gorley, 2005). We also used a one-way similarity percentage method (SIMPER) to identify the most representative species in each zone and to determine the percentage of similarity between zones. Species were selected considering those contributing with 90% of the observed similarity in this study. Functional groups for species in the lagoon were determined according to Escofet et al. (1988) and Terres (1991) on the basis of their foraging strategy (shorebirds, ducks, small grebes, jacanas and large wading birds) and dietary strategy (herbivore, piscivore). Our categories are coarse, but match the generality of the ecological questions we addressed.

Citations bibliographiques

  1. Güitrón-López, M. M., Huerta-Martínez, F. M., Báez-Montes, O., Estrada-Sillas, Y. F., Chapa-Vargas, L., 2018. Temporal and spatial variation of waterbirds at Sayula Lagoon, Jalisco, Mexico: a five-year winter season study. Arxius de Miscel·lània Zoològica, 16: 135-150, Doi: https://doi.org/10.32800/amz.2018.16.0135 https://doi.org/10.32800/amz.2018.16.0135

Métadonnées additionnelles

Identifiants alternatifs doi:10.15470/cuwqgi
1be624ad-2628-4a57-a68f-0fea6e3fba31
https://ipt.gbif.es/resource?r=waterbirds_sayula_lagoon