Causes And Disadvantages Of Macroinvertebrates

The macroinvertebrates graph (figure 2) represents the diversity of species inhabiting the Baldwin Swamp. In 2009 the Baldwin swamp was flourishing with a large diversity of species. A total of 33 macroinvertebrates, 8 species were recorded. At this time the baldwin swamp was healthy, abundant in life and the ecosystem and food webs were unaffected by the floods. Whereas 3 weeks after the floods swept through there were little to no range of species of macroinvertebrates. There were a recorded amount of 2 Damselfly Nymph and 1 waterboat man. A theory to why these two

Temperature and environment plays a key role on the effects of an ectothermic organism’s metabolism. The specific ectothermic organism used in this study was the Gromphadorhina portentosa also known as the Madagascar Hissing Cockroach. In this study we measured CO2 production (%) and temperature (̊C) every three minutes for a total of 15 minutes in three different temperature environments. The three temperature environments conducted in the experiment included room temperature, a cold environment (ice bath), and a hot environment (how water bath). The purpose of this study was to test the effects of temperature change on

Competition determines survival of the fittest. The larger plankton eat larger particles, therefore making themselves thrive, and the smaller planktonic herbivores were extinguished from the specific lake ecosystem. When the plankton are being heavily hunted, the smaller thrive. The small plankton tend to succeed in the general plankton population because they are effective when collecting their food, and they have lower metabolic rates, requiring them to eat less. An equation was devised to represent this scenario. “The food collecting surfaces are proportional to the square of some characteristic linear dimension, such as body length, in Crystal Lake, for example, the body length of Daphnia catawba is about four times that of Bosmina longirostris, so that the filtering area of the Daphnia is about 16 times larger than that of the

Lampert, W., & Sommer, U. (2010). Limnoecology: [the ecology of lakes and streams]. Oxford [u.a.: Oxford University

Gammarus setosus is a marine amphipod that is found in the intertidal waters of British Columbia. A study of temperature on the rate of movement of Gammarus setosus was undertaken to find whether temperature would positively or negatively affect the activity of Gammarus setosus. Specimens of Gammarus setosus was obtained and tested. 30 ppt salt water of 5°C, 23°C, and 30°C was used to perform the experiment. The specimens were allowed to acclimate for one minute. Then, the distance traveled by the specimens was collected and analyzed. A total of 13-15 replicates were tested per trial. It was found that the specimens were most active in the 20°C trial. The

Through our research we aimed to determine if there were any differences in water quality of both the north and south forks of Strawberry Creek. As time progresses and the environment changes it is important to keep track of how certain species are being impacted by these features, and how they cope with change. We hypothesized that due to the lack of pollution, the south fork will promote a greater diversity of macroinvertebrates. This was due to the fact that there was less runoff and trash that could be introduced to the water in the south fork, than there was in the north fork. We gathered data by analyzing the different organisms living in both forks. We collected a total of fifty vials composed of five organisms from each fork, and inspected them under microscopic view. After gathering data and identifying the different kinds of organisms living in the different forks we assessed whether the organisms from the samples could live in high or low resolution water. We also took a t-test to assess the probability of these differences being due to relevant factors or by chance. Our major findings suggest that organisms in the south fork showed a higher demand to living in cleaner water indicating that our hypothesis was correct.

We performed an experiment on crayfish focusing on their metabolic rates, via oxygen consumption, at two acclimated temperatures. Crayfish were either acclimated to a warm temperature (20 to 25C) or to a

Boyd, C.E. 1976. Water chemistry and plankton in unfertilized ponds in pastures and in woods.635-636, Stickney, R.R., 1979. Principles of warm water aquaculture. John Wiley & Sons, New York.

Participants following OBBN protocol predominately use the travelling-kick-and-sweep method to collect macroinvertebrates in wadeable environments (Ontario Ministry of the Environment, 2007). This method consists of using a water transect including two riffles and one pool to perform the collection (Ontario Ministry of the Environment, 2007). Travelling-kick-and-sweep begins by entering the selected aquatic environment, and kicking the substrate to disrupt the sediment and potential invertebrates (Ontario Ministry of the Environment, 2007). Holding a net (500um) downstream and adjacent to the kicking area to collect or sweep up the dislodged organisms (Ontario Ministry of the Environment, 2007). Other methods include; grab samples in deep water sites, jab

For the convenience of the students, a packet for recording the stream’s content and results was provided. On the first and second page, tables for seeing the taxa types of aquatic macroinvertebrates found were laid out, and students were to check the boxes with the names of the taxa they found in this area. Students entered the stream with a large water strain, and put dirt from the stream and carried it out of the stream to be examined. After observing several catches from the stream, the group one taxa findings included Stonefly nymph, Mayfly nymph, and Dobson fly nymph.

Ectotherms experience many changes in their physiological and biochemical processes based on their surrounding temperature. Temperature can alter the way an ectotherm uses its energy in its daily activities. Researchers often measure this pattern of energy usage by looking at organismal metabolic rate. The metabolic rate can be described as all of the chemical processes occurring in a body. It is commonly determined by either the rate of production of CO2 or the rate of consumption of O2 (Nespolo et al. 2003).

Over the years, climate change has affected marine species because it has increased the ocean temperature, causing it to get warmer, which is causing a negative impact to most marine organisms like echinoderms and cnidarians (Quinn, 2016). In many cases, the optimum temperature of growth increased 1-6°C, which created harmful effects on stages of development (Quinn, 2016). In some cases such as the American lobster (Homarus americanus), warming of the ocean had caused smaller body sizes (Le Bris et al., 2016). Even though there is some research that showed that the warm temperature could also benefit the lobster’s population, most of their population has declined in the warmest and southernmost regions of the lobster’s range in places like southern New England and Long Island Sound (Quinn, 2016).

For an existing habitat, an increase in salt levels will begin to show an effect on the abundance and diversity in species of zooplankton. This will exhibit a detrimental effect on the daphnia from the limited osmoregulatory capabilities of the organisms. This in turn can pose a risk to the level feeding rates and survival (Heine-Fuster, Vega-Retter, Sabat & Ramos-Jiliberto,

This investigation was carried out to determine if the rate of movement of porcellio scabers changed when it was placed in different temperatures and therefore if the temperature affected their ecological niche. My graph is slightly different compared to the Rosehill College’s practical investigation of porcellio scabers graph, found under the biology section on the Rosehill College webpage. The Rosehill College porcellio scaber graph from 5°C to 15°C decreased in average rate of movement and from 15°C to 25°C, it increased in average rate of movement. My graph did not decrease at any point as the average rate of

The patterns of biological diversity in rivers and streams among taxa vary on a spatial and temporal scale (Ligeiro et al. 2010; McGarvey and Terra 2015). Variations in stream ecology can be contributed to water quality, habitat, and history of disturbance (Lingeiro et al. 2010). Creeks and streams feed into rivers and other larger bodies of water, which provide food, water, and other commercial and recreational services as well as a home to an array of plants and animals which rely on clean water. The health of these smaller bodies of water can act as indicators for the health of the larger watershed.