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Ecology and Evolutionary Biology Commons™
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Articles 1 - 9 of 9
Full-Text Articles in Ecology and Evolutionary Biology
Synergistic Communities For Biochar, Albert Bates, Jonathan Bates, Peter Hirst
Synergistic Communities For Biochar, Albert Bates, Jonathan Bates, Peter Hirst
USBI Biochar Conferences
Biochar & Permaculture: Albert Bates
http://www.youtube.com/watch?v=afaKoWXsRiU
Biochar & Aquaponics: Jonathan Bates
http://www.youtube.com/watch?v=9c21drA2KS4
Jonathan will present his experience using biochar as a powerful growing medium in aquaponic systems. Aquaponics being the culturing of fish and plants together ecologically in closed systems (the merging of aquaculture and hydroponics). Biochar grow media benefits aquaponic systems in multiple ways, including its light weight, local sourcing, bio-chemical qualities, ecological nature, and affordable price. Through pictures and discussion he will show how his experiment has faired, and offer ideas for economic opportunities of aquaponic biochar in the Northeast.
Biochar & the Klamath Hydro Settlement: Peter Hirst …
Holyoke Dam, Connecticut River, 2013, Brett Towler
Holyoke Dam, Connecticut River, 2013, Brett Towler
Fish Passage Data Archive
Holyoke River
Connecticut Dam
Massachusetts
Year data collected: 2013
Regional Comparison Of Overwintering Mortality, Fecundity, And Virulence In The Hemlock Woolly Adelgid, Artemis Demas Roehrig
Regional Comparison Of Overwintering Mortality, Fecundity, And Virulence In The Hemlock Woolly Adelgid, Artemis Demas Roehrig
Masters Theses 1911 - February 2014
Throughout the eastern United States, the spread of the hemlock woolly adelgid, Adelges tsugae Annand, has caused high mortality of eastern hemlocks Tsuga canadensis (L.). We recorded overwintering survival and fecundity of A. tsugae, and tree new growth at sites in the northeastern and southeastern United States and in a common garden experiment in Massachusetts.
Overwintering mortality of A. tsugae was much higher in the north (87%) than the south (37%) in 2009, and showed significantly positive density-dependence in the north only. In 2010, overwintering mortality decreased in both regions but remained higher in the north (54%) than the …
Resin Volatiles Of Eastern Hemlock Induced By Its Non-Native Herbivores, Joshua D. Pezet
Resin Volatiles Of Eastern Hemlock Induced By Its Non-Native Herbivores, Joshua D. Pezet
Masters Theses 1911 - February 2014
Eastern hemlock (Tsuga canadensis) is in decline because of infestation by the invasive hemlock woolly adelgid (Adelges tsugae; ‘HWA’) and, to a lesser extent, the elongate hemlock scale (Fiorinia externa; ‘EHS’). Many conifers respond to insect herbivory by inducing oleoresin-based defenses, however it is unknown whether eastern hemlock is capable of this inducible response. We conducted a plantation setting study of artificially infested saplings to determine if feeding by HWA or EHS induces changes in the tree’s volatile chemistry. The induced changes in volatiles we found were unlike the terpenoid-based defenses of related conifers. Only HWA feeding …
Habitat Heterogeneity Concentrates Predators In The Seascape: Linking Intermediate-Scale Estuarine Habitat To Striped Bass Distribution, Cristina Kennedy
Habitat Heterogeneity Concentrates Predators In The Seascape: Linking Intermediate-Scale Estuarine Habitat To Striped Bass Distribution, Cristina Kennedy
Masters Theses 1911 - February 2014
Predators are key components of aquatic ecosystems and innovative approaches to understanding their spatial distribution are imperative for research, effective management, and conservation. Discontinuities, created by abrupt changes between two unlike entities, are irregularly-distributed, intermediate-scale features that can have a disproportionate effect on organismal distribution within the seascape. Here I use the discontinuity concept to relate the distribution of a predator, striped bass (Morone saxatilis), to physical features within Plum Island Estuary (PIE), MA. I mapped the distribution of 50 acoustically-tagged striped bass during four monthly surveys at 40 sites to evaluate if heterogeneity in physical features concentrated …
Interactions Between Pieris Oleracea And Pieris Rapae (Lepidoptera: Pieridae) Butterflies, And The Biological Control Agents Cotesia Glomerata And Cotesia Rubecula (Hymenoptera: Braconidae)., Megan V. Herlihy
Masters Theses 1911 - February 2014
Pieris oleracea, formerly Pieries napi, was once a widespread pierid butterfly in New England until the introduction of a biological control agent, Cotesia glomerata. It has been suggested that C. glomerata is responsible for the range reduction of P. oleracea. There are been several introductions of a second more specialized biological control agent, Cotesia rubecula, to the United States since the 1960’s. My first goal was to determine the current distribution and status of P. rapae parasitoids and the effectiveness of C. rubecula as a biological control agent since its release. The findings of a survey …
Habitat Use And Seasonal Movement Patterns Of Four-Toed Salamanders (Hemidactylium Scutatum) In Massachusetts, Kimberly O. Vitale
Habitat Use And Seasonal Movement Patterns Of Four-Toed Salamanders (Hemidactylium Scutatum) In Massachusetts, Kimberly O. Vitale
Masters Theses 1911 - February 2014
Understanding the movement phenology of the four-toed salamander (Hemidactylium scutatum) is essential to guide management practices. I examined the relationship between environmental variables and the directionality, timing, and magnitude of four-toed salamander movements at two locations in eastern Massachusetts. Four-toed salamanders move from upland habitats to wetland areas in early spring and move away from wetlands in late spring. Adult movements increased with more precipitation and less moon light. Juvenile movements were similarly affected, and in addition they were more likely to move when temperatures were warm and days long. My results can be used to implement management …
Aquatic Barrier Prioritization In New England Under Climate Change Scenarios Using Fish Habitat Quantity, Thermal Habitat Quality, Aquatic Organism Passage, And Infrastructure Sustainability, Alexandra C. Jospe
Masters Theses 1911 - February 2014
Improperly designed road-stream crossings can fragment stream networks by restricting or preventing aquatic organism passage. These crossings may also be more vulnerable to high flow events, putting critical human infrastructure at risk. Climate change, which will require access to suitable habitat for species persistence, and is also predicted to increase the frequency and magnitude of extreme floods, underscores the importance of maintaining stream connectivity and resilient infrastructure. Given the large number of road-stream crossings and the expense of replacement, it is increasingly important to prioritize removals and account for the multiple benefits of these management actions. I developed an aquatic …
Modeling Effectiveness Of Low Impact Development On Runoff Volume In The Tan Brook Watershed, Christopher Hewes, Robert F. Smith, Craig Nicolson
Modeling Effectiveness Of Low Impact Development On Runoff Volume In The Tan Brook Watershed, Christopher Hewes, Robert F. Smith, Craig Nicolson
Research
The Tan Brook is a heavily channelized stream that runs through an urbanized watershed in Amherst, MA. It poses a stormwater management problem for the University of Massachusetts Amherst due to flooding of soccer fields and erosion of a drainage ditch. The purpose of this study was to estimate reductions in runoff volume to the Tan Brook based on the hypothetical implementation of permeable pavements in various combinations of parking lots, driveways, roadways, and sidewalks, which cover 26% of the watershed area. A spreadsheet model-based approach utilized the Watershed Treatment Model to estimate runoff volume. The percent imperviousness of various …