Abstract
ABSTRACT Currently, it is widely recognized that invertebrates play key roles in neotropical floodplains and in many other environments worldwide. However, little information has been published concerning their biometry, in spite that it represents an essential tool for many different studies. Here, we provided length-mass and length-length relationships by fitting the linearized model (log10 Y = log10a + b log10 X) and several mean biomass ratios ± SE for bivalves, gastropods, quironomids, ephemeropterans, oligochaetes and hirudineans. We measured, weighed, oven dried and incinerated to ashes specimens collected from 2005 to 2014 in the Paraná River, Argentina. The lineal equations had fit levels higher than 75% in most of the significant regressions. Hence, when slopes were compared, differences raised from ontogeny and phylogeny of taxa. Additionally, slopes resulted different from constants of other regions, types of environments and climates. In addition, organic matter ratios resulted significantly different among invertebrates according to their feeding types. The equations and ratios that we provided will facilitate future research on life history, productivity and energy transference in the food webs of invertebrates inhabiting floodplain wetlands and can be used as tools for planning management strategies and in restoration projects of aquatic environments.
Highlights
It is widely recognized that invertebrates play key roles in neotropical floodplains and in many other environments worldwide
As macroinvertebrates play an important role in food webs and matter cycling in most aquatic systems, is essential to count with tools to study their biomass and productivity
The biometric relationships were obtained for mollusks, midges, aquatic worms, mayflies and leeches collected in the frame of different studies from 2005 through 2014 from ponds, streams, rivers, and temporary wetlands very closely located to 2 RAMSAR sites (31°37’52”S 60°30’45”W and 31°53’34”S - 60°40’36”W, Paraná River floodplain, Argentina, Table I)
Summary
It is widely recognized that invertebrates play key roles in neotropical floodplains and in many other environments worldwide. Las ecuaciones y proporciones que obtuvimos facilitarán futuras investigaciones sobre historia de vida, productividad y transferencia de energía en las tramas tróficas de invertebrados en humedales de llanura aluvial y pueden ser empleadas para planificar estrategias de manejo y en proyectos de restauración de ambientes acuáticos. Length-dry or wet mass conversion is one of the most used techniques for estimating biomass from samples when direct measurement is neither possible nor practical (Benke et al, 1999). This method is usually considered better to others The length-mass analyses have been widely used and tested for mass estimations of Iheringia, Série Zoologia, 107: e2017014
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
