Now showing items 1-10 of 17
Effects of Crayfish Presence and Substrate Size on Benthic Populations in Little Niagara Creek
A current concern for many freshwater bodies is the rising number of invasive Rusty Crayfish (Oroconectes rusticus) an aggressive species that can potentially harm the freshwater ecosystem they inhabit. This can be done ...
Distribution of Earthworms and Other Invertebrates on the Upper and Lower Terraces of Putnam Park
The objective of our study was to identify the pattern of the distribution of earthworms and ground-dwelling invertebrates on the upper and the lower terraces of Putnam Park.
Factors Influencing Crayfish Distributions in Streams
Crayfish are important to study because they are ecosystem engineers that are often an invasive species and that are pivotal in predator-prey interactions (Townsend 2004, Olden et al. 2005). Calcium levels along with ...
Crayfish Abundance in Little Niagara Creek
Our study investigated crayfish abundance patterns in Little Niagara Creek. We initially hypothesized that crayfish numbers would differ between riffles and pools as suggested by Clark et al. (2013). Pools can be ...
Effects of Invertebrate Shredders and Leaf Type on Leaf Breakdown in Streams
Leaf litter is a vital source of nutrients for stream-dwelling organisms and the rate at which these nutrients are released by decomposition is important to the overall functioning of the stream1. Both microorganisms and ...
Nutrient and Light Limitation Effects on Algal Populations in Two Streams
Algal blooms are associated with high nutrient concentrations and can pose problems for freshwater ecosystems, the organisms they contain, and humans that benefit from them. Nutrients that are usually a limiting factor ...
Effects of Organic Substrates on Earthworm Behavior : Do Worms Show a Preference?
From the time of the last glaciation, earthworms were absent from northern soils, until non-native species were accidently imported from Europe in the 1600’s. Earthworms are “ecosystem engineers” that can modify soil ...
Do Leaves from Native and Non-Native Trees Decompose at Different Rates in Streams?
Organic matter decomposition is an important ecological process in stream ecosystems. Decaying leaves in particular constitute an important source of food and habitat for microorganisms and macroinvertebrate “shredders,” ...
Assessing Restoration along the Escalante River: Does Removal of an Invasive Tree Benefit the Arthropod Community?
The Escalante River is the last remaining free-flowing river of its size in the western United States, and it faces environmental threats from the invasive Russian olive tree, Elaeagnus angustifolia (Reynolds and Cooper ...
Does Habitat Restoration Work? A Case Study From Utah's Escalante River
The Escalante River ecosystem, like many across the southwestern United States, is threatened by invasive Russian olives trees (Elaeagnus angustifolia).Russian olives are drought tolerant nitrogen-fixers that form dense ...