Sammanfattning

In this study we evaluated the usefulness of rotifer emergence from dry soils to indicate the environmental status of a remnant temporary pond complex in an agricultural area in central Spain. Because the ponds did not flood during our project, emergence was studied in relation to environmental variables in outdoor microcosms. Redundancy analysis and nestedness analysis showed that salinity and total nitrogen concentrations shaped the emerged communities. Depauperate rotifer assemblages from pond microcosms with higher salinity and nitrogen levels were nested subsets of species-rich communities from microcosms of less enriched sites. Rotifer community structure also identified small ponds as reference sites that should receive priority in conservation and degradation mitigation programs. Results suggest that rotifer emergence from rewetted sediments using microcosms can be useful for evaluating the nutrient status during the dry phase of temporary wetlands. While results from this approach are conservative, requiring comparisons with field observations, their tentative value lies in alerting management and providing a basis for future research of poorly studied but threatened temporary habitats. Rotifer emergence could be a useful alternative to traditional biological indicators of nutrient status that depend on the presence of water. (C) 2009 Elsevier Ltd. All rights reserved.

Nyckelord

Anthropogenic stress; Dry phase; Impact assessment; Nutrient conditions; Propagule banks; Temporary wetlands; Rotifera

Publicerad i

Ecological Indicators
2010, Volym: 10, nummer: 2, sidor: 545–549

SLU författare

• Angeler, David

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    
  • Universidad de Castilla-La Mancha

Globala målen

SDG6 Säkerställa tillgången till och en hållbar förvaltning av vatten och sanitet för alla
SDG13 Vidta omedelbara åtgärder för att bekämpa klimatförändringarna och dess konsekvenser


UKÄ forskningsämne

Miljö- och naturvårdsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1016/j.ecolind.2009.07.001

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/33588