TY  - JOUR
PY  - 2020//
TI  - Early evidences of niche shifts in estuarine fishes following one of the world's largest mining dam disasters
JO  - Marine pollution bulletin
A1  - Andrades, Ryan
A1  - Guabiroba, Helder C.
A1  - Hora, Maik S. C.
A1  - Martins, Rebeka F.
A1  - Rodrigues, Vitor L. A.
A1  - Vilar, Ciro C.
A1  - Giarrizzo, Tommaso
A1  - Joyeux, Jean-Christophe
SP  - e111073
EP  - e111073
VL  - 154
IS  - 
N2  - The Fundão dam collapse occurred on November 2015 in Mariana city (Brazil), provoking a series of ecological impacts over the Doce river basin and its nearshore environment. However many impacts over fishery target fauna (fish and shrimp) are still unknown or underestimated due to the lack of baseline data in the region. In the present study we assessed the isotopic niches modeled from δ<sup>13</sup>C and δ<sup>15</sup>N signatures of six estuarine fish species before and after the impact to assign potential shifts at the population- and community-level. We showed isotopic niche has altered in all studied species irrespective of its trophic group and habitat use. Niche community metrics indicated a depletion of trophic diversity and basal resources of the whole community after the impact. Food web changes as we reported here can impair the energy transfer through the food chain and put at risk the sustainability of small fisheries that rely upon local resources.<br><br>Copyright © 2020 Elsevier Ltd. All rights reserved.<p />  <p>Language: en</p>
LA  - en
SN  - 0025-326X
UR  - http://dx.doi.org/10.1016/j.marpolbul.2020.111073
ID  - ref1
ER  -