TY - JOUR
T1 - Marine bioinvasions: Differences in tropical copepod communities between inside and outside a port
AU - Soares, Marcelo de Oliveira
AU - Campos, Carolina Coelho
AU - Santos, Nívia Maria Oliveira
AU - Barroso, Hortência de Sousa
AU - Mota, Erika Maria Targino
AU - Menezes, Maria Ozilea Bezerra de
AU - Rossi, Sergio
AU - Garcia, Tatiane Martins
PY - 2018/4/1
Y1 - 2018/4/1
N2 - © 2018 Elsevier B.V. The difficulty of detecting non-indigenous species (NIS) in marine environments is an “invisible problem” in areas where plankton monitoring does not occur. In this study, we investigated the dominance of the NIS Temora turbinata and copepod community structure in two tropical marine habitats: inside an offshore port, which had turbid and calm waters, and outside the port, which was more hydrodynamic. Our study area was on the northeast coast of Brazil. We found 17 taxa of Copepoda, which were dominated by T. turbinata and the congener, T. stylifera. The high average density of the NIS (21.03 ind./m3) was in stark contrast with that of the native copepods (0.01–3.27 ind./m3). The NIS density was negatively correlated with the species richness and evenness of the native community, was significantly higher inside the port than outside, and was positively correlated with phytoplankton density. A multivariate analysis revealed that there was a significant difference in copepod community structure between inside and outside the port; outside the port, the community was more diverse, and the native T. stylifera was more abundant. We found that tropical copepod communities inside an offshore port have low diversity, and probably have little biotic resistance against NIS invasions. Our results, combined with those previously obtained, highlight the need to study the spatial distributions of NIS and native species in pelagic environments.
AB - © 2018 Elsevier B.V. The difficulty of detecting non-indigenous species (NIS) in marine environments is an “invisible problem” in areas where plankton monitoring does not occur. In this study, we investigated the dominance of the NIS Temora turbinata and copepod community structure in two tropical marine habitats: inside an offshore port, which had turbid and calm waters, and outside the port, which was more hydrodynamic. Our study area was on the northeast coast of Brazil. We found 17 taxa of Copepoda, which were dominated by T. turbinata and the congener, T. stylifera. The high average density of the NIS (21.03 ind./m3) was in stark contrast with that of the native copepods (0.01–3.27 ind./m3). The NIS density was negatively correlated with the species richness and evenness of the native community, was significantly higher inside the port than outside, and was positively correlated with phytoplankton density. A multivariate analysis revealed that there was a significant difference in copepod community structure between inside and outside the port; outside the port, the community was more diverse, and the native T. stylifera was more abundant. We found that tropical copepod communities inside an offshore port have low diversity, and probably have little biotic resistance against NIS invasions. Our results, combined with those previously obtained, highlight the need to study the spatial distributions of NIS and native species in pelagic environments.
KW - Invasive species
KW - Port
KW - Temora stylifera
KW - Temora turbinata
KW - Tropical ecosystem
KW - Zooplankton
U2 - 10.1016/j.seares.2018.01.002
DO - 10.1016/j.seares.2018.01.002
M3 - Article
VL - 134
SP - 42
EP - 48
JO - Journal of Sea Research
JF - Journal of Sea Research
SN - 1385-1101
ER -