TY - JOUR
T1 - Space-time variations of megazoobenthos subject to natural and anthropogenic impacts in two cuban bays
T2 - Evidence of recovery?
AU - Lopeztegui-Castillo, Alexander
AU - Capetillo-Piñar, Norberto
AU - Betanzos-Vega, Abel
AU - Martínez-Daranas, Beatriz
AU - Martínez-Coello, Diana
AU - Abitia-Cárdenas, Leonardo Andrés
N1 - Publisher Copyright:
© 2021, Escuela de Ciencias del Mar. All rights reserved.
PY - 2021
Y1 - 2021
N2 - The spatiotemporal variations of megazoobenthos on soft bottoms in Buena Vista (BV) and San Juan de Los Remedios (SJR) bays, Cuba, were assessed to infer the effects of the elimination of bottom trawl fisheries and the creation of protected areas. Data were collected at 11 sites in 2010-2013 (six routines and five exploratories) and 11 sites in 2014-2017 (four routines and seven exploratories). Samples were obtained by dredging. Mollusks were the most frequent and diverse group, followed by echinoderms and crustaceans. Total density (7.60 ind m-2) and biomass (15.82 g m-2) of the benthic community were highest in SJR in 2015. Although total biomass was lower at BV (t = 2.21; P = 0.032), there were no significant differences in density between bays (t = 0.77; P = 0.444). The site with a lower total density and biomass was located at BV. There were no differences between years except at one site, where density increased between 2010 and 2017. Total density and biomass were not significantly different inside and outside of the Zone Under Special Regime of Use and Protection (ZUSRUP) at the beginning of the sampled period. However, both density and biomass were significantly higher within the ZUSRUP at the end (2017), which suggests this protected area’s effectivity. The progressive increase in density at one site and greater density and biomass values at SJR, where bottom trawl fisheries were more intensive, suggest eliminating bottom trawl nets may have contributed to the benthic fauna recovery.
AB - The spatiotemporal variations of megazoobenthos on soft bottoms in Buena Vista (BV) and San Juan de Los Remedios (SJR) bays, Cuba, were assessed to infer the effects of the elimination of bottom trawl fisheries and the creation of protected areas. Data were collected at 11 sites in 2010-2013 (six routines and five exploratories) and 11 sites in 2014-2017 (four routines and seven exploratories). Samples were obtained by dredging. Mollusks were the most frequent and diverse group, followed by echinoderms and crustaceans. Total density (7.60 ind m-2) and biomass (15.82 g m-2) of the benthic community were highest in SJR in 2015. Although total biomass was lower at BV (t = 2.21; P = 0.032), there were no significant differences in density between bays (t = 0.77; P = 0.444). The site with a lower total density and biomass was located at BV. There were no differences between years except at one site, where density increased between 2010 and 2017. Total density and biomass were not significantly different inside and outside of the Zone Under Special Regime of Use and Protection (ZUSRUP) at the beginning of the sampled period. However, both density and biomass were significantly higher within the ZUSRUP at the end (2017), which suggests this protected area’s effectivity. The progressive increase in density at one site and greater density and biomass values at SJR, where bottom trawl fisheries were more intensive, suggest eliminating bottom trawl nets may have contributed to the benthic fauna recovery.
KW - Environmental impact
KW - Habitat quality
KW - Megazoobenthos
KW - Protected areas
KW - Trawl fishing
UR - http://www.scopus.com/inward/record.url?scp=85103851287&partnerID=8YFLogxK
U2 - 10.3856/vol49-issue1-fulltext-2542
DO - 10.3856/vol49-issue1-fulltext-2542
M3 - Artículo
AN - SCOPUS:85103851287
SN - 0718-560X
VL - 49
SP - 97
EP - 109
JO - Latin American Journal of Aquatic Research
JF - Latin American Journal of Aquatic Research
IS - 1
ER -