ILPLA   05424
INSTITUTO DE LIMNOLOGIA "DR. RAUL A. RINGUELET"
Unidad Ejecutora - UE
artículos
Título:
Assessing the sensitivity of leeches as indicators of water quality
Autor/es:
GULLO, BETTINA S.; MARINELLI, CLAUDIA B.; CORTELEZZI, AGUSTINA; CEPEDA, ROSANA E.; BERKUNSKY, IGOR; SIMOY, MARÍA V.; RODRIGUES CAPÍTULO, ALBERTO
Revista:
THE SCIENCE OF TOTAL ENVIRONMENT
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2018 vol. 624 p. 1244 - 1249
ISSN:
0048-9697
Resumen:
The objective of this work was assessing the sensitivity of leeches to several water quality attributes in lowlands streams. We used occupancy modelling that account explicitly for detectability, to estimate the influence of four variables (dissolved oxygen, 5-days biochemicals oxygen demand, conductivity, and dissolved inorganic nitrogen) affecting nine species. We described the sensitivity as a change in the occupancy along the range of water quality attributes. We found at least one species of Helobdella in 81% of sites and Helobdella, as genus, was detected along the entire gradient of each attribute. However, differences in the sensitivity were observed between species. For example, if we analyse the sensitivity of the genus Helobdella to dissolved oxygen, we can say that it is very tolerant. However, if we analyse the response to dissolved oxygen of each one of the species of Helobdella, we will realize that H. michaelseni, and H. simplex showed a high occupancy at high levels of dissolved oxygen; while H. hyalina and H. triserialis lineata showed high occupancy at low levels. Describe the sensitivity of the species in terms of occupancy, offers a new methodology to understand how the species behave along a stressor gradient.