TY - JOUR
T1 - Influencia del sustrato y las condiciones ambientales sobre la estructura de asociaciones de diatomeas bentónicas en una laguna costera tropical
AU - López-Mejía, D.
AU - Siqueiros-Beltrones, D. A.
AU - Gutiérrez-Mendieta, F. J.
N1 - Publisher Copyright:
© 2022 Universidad Autonoma Metropolitana. All rights reserved.
PY - 2022/12
Y1 - 2022/12
N2 - Background. The structure of benthic diatom assemblages (BDA) is related to the type of substrate where they flourish. Goals. assess the degree of variation shown by BDA growing on live and non-living substrata from a tropical coastal lagoon (Terminos lagoon). We tested the hypothesis that substrate influence would deem significantly distinct BDA. Methods. diatom samples were collected from live and non-living substrata from four sites within Terminos lagoon, México, where physicochemical variables were also measured. Diatom taxa were identified, and their relative abundances were estimated and used to compute community parameters (species diversity, equitability, dominance), along with the indicator value (IndVal). Also, similarity between the BDA from the four sites was measured and values were then compared using ANOSIM. Results. Although the IndVal showed a clear separation based on the dominant/constant taxa, ANOSIM indicated that differences between the sites were not significant. This may be related to the characteristic patchy distribution of BDA along environmental gradients. Conclusions. in coastal ecosystems the structure of BDA could be mainly influenced by environmental variables.
AB - Background. The structure of benthic diatom assemblages (BDA) is related to the type of substrate where they flourish. Goals. assess the degree of variation shown by BDA growing on live and non-living substrata from a tropical coastal lagoon (Terminos lagoon). We tested the hypothesis that substrate influence would deem significantly distinct BDA. Methods. diatom samples were collected from live and non-living substrata from four sites within Terminos lagoon, México, where physicochemical variables were also measured. Diatom taxa were identified, and their relative abundances were estimated and used to compute community parameters (species diversity, equitability, dominance), along with the indicator value (IndVal). Also, similarity between the BDA from the four sites was measured and values were then compared using ANOSIM. Results. Although the IndVal showed a clear separation based on the dominant/constant taxa, ANOSIM indicated that differences between the sites were not significant. This may be related to the characteristic patchy distribution of BDA along environmental gradients. Conclusions. in coastal ecosystems the structure of BDA could be mainly influenced by environmental variables.
KW - Benthic diatoms
KW - Terminos lagoon
KW - ecology of microalgae
KW - estuarine environment
UR - http://www.scopus.com/inward/record.url?scp=85158878534&partnerID=8YFLogxK
U2 - 10.24275/UAM/IZT/DCBS/HIDRO/2022V32N3/LOPEZM
DO - 10.24275/UAM/IZT/DCBS/HIDRO/2022V32N3/LOPEZM
M3 - Artículo
AN - SCOPUS:85158878534
SN - 0188-8897
VL - 32
SP - 265
EP - 274
JO - Hidrobiologica
JF - Hidrobiologica
IS - 3
ER -