276 research outputs found
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Syllabus: Wildlife Habitat Management
This course provides an in-depth exploration of wildlife-habitat relationships, illustrated through basic field zoology and natural history, evolutionary biology, and ecological theory. We introduce you to quantitative tools used to explain ecological processes and their influence on wildlife and their environment. We will examine the dynamics and management of various habitats in New England, North America, and elsewhere through field visits and use of primary literature. We will place particular emphasis on managing wildlife habitat in an urbanizing world. By one estimate, roughly 9% of the land area of the United States is in a zone of wildland-urban interface, but that figure rises above 60% for southern New England. In wildland-urban interfaces, homes intermingle with undeveloped wildland vegetation, and human activities can have profound impacts on animal species. Perhaps equally important, animals have the potential to affect humans, in both positive and negative ways. Human values, perceptions, and uses of open space become critical aspects of habitat management in wildland-urban interfaces. UMass campus provides us with a useful case study of managing habitat in places where people live and work. The campus is arguably the most âurbanâ part of Hampshire County, with a residential population density higher than that of Springfield, MA and 6 of the 10 largest US cities. Yet, species like bobcats, fox, and peregrine falcons regularly occupy campus lands. In the lab component, students will work in teams to develop a habitat management plan for the UMass-Amherst campus. We will aim to provide real guidance to the Campus Sustainability Initiative and other long term planning efforts on campus. We will use a Team-Based Learning (TBL) approach in this class. Teamwork is an essential skill to learn in the field of wildlife habitat management. I am regularly asked to comment on former studentsâ skills at working in a team when I write letters of recommendation. In addition, I have seen that students working in teams perform better on quizzes and other exercises than even the highest performing students do on their own. In order to ensure fairness in grading, we will conduct regular peer evaluations of your team members, and these evaluations will contribute to the calculation of grades on all team-based assignments (see the section below on âGradingâ). More information on TBL and the rationale behind this approach can be found at: http://www.umass.edu/ctfd/teaching/team-based.shtm
Recommended from our members
Wildlife Habitat Management
The primary goal for this course is to help you put into practice tools you have been acquiring in your other Natural Resources Conservation courses. We will explore wildlife-habitat relationships in depth, through the lenses of basic field zoology and natural history, evolutionary biology, and ecological theory. We will introduce you to quantitative tools used to explain ecological processes and their influence on wildlife and their environment. We will examine the dynamics and management of various habitats in New England, North America, and elsewhere through field visits and use of primary literature. But most importantly, we will ask you to take on some of the responsibilities for gathering and synthesizing information about a particular piece of land and its associated wildlife in order to contribute to an ongoing management planning process for the Town of Amherstâs conservation lands
Towards a directed homotopy type theory
In this paper, we present a directed homotopy type theory for reasoning
synthetically about (higher) categories, directed homotopy theory, and its
applications to concurrency. We specify a new `homomorphism' type former for
Martin-L\"of type theory which is roughly analogous to the identity type former
originally introduced by Martin-L\"of. The homomorphism type former is meant to
capture the notions of morphism (from the theory of categories) and directed
path (from directed homotopy theory) just as the identity type former is known
to capture the notions of isomorphism (from the theory of groupoids) and path
(from homotopy theory). Our main result is an interpretation of these
homomorphism types into Cat, the category of small categories. There, the
interpretation of each homomorphism type hom(a,b) is indeed the set of
morphisms between the objects a and b of a category C. We end the paper with an
analysis of the interpretation in Cat with which we argue that our homomorphism
types are indeed the directed version of Martin-L\"of's identity types
The role of market feasibility in multi-family investment : lessons learned from four case studies
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1993.by Stephanie Paige Warren.M.S
Temporal Variation in Optical Properties of Chromophoric Dissolved Organic Matter (CDOM) in Southern California Coastal Waters with Nearshore Kelp and Seagrass
Optical properties of chromophoric dissolved organic matter (CDOM) were measured in surf zone waters in diurnal field studies at a Southern California beach with nearshore kelp and seagrass beds and intertidal plant wrack. Absorption coefficients (aCDOM(300 nm)) ranged from 0.35 m21 to 3.7 m21 with short-term variability\u3c1 h, increases at ebb and flood tides and higher values (6 m21) during an offshore storm event. Spectral slopes (S) ranged from 0.0028 nm21 to 0.017 nm21, with higher values after the storm; S was generally inversely correlated with aCDOM(300 nm). 3-D excitationâemission matrix spectra (EEMs) for samples with lower S values had humic-type peaks associated with terrestrial material (A, C), marine microbial material (M) and protein peaks, characteristic of freshly produced organic material. Samples with high S values had no or reduced protein peaks, consistent with aged material. Fluorescent indexes (f450/f500 \u3e2.5, BIX\u3e1.1) were consistent with microbial aquatic sources. Leachates of senescent kelp and seagrass had protein and humic-type EEM peaks. After solar simulator irradiation (4 h), protein peaks rapidly photochemically degraded, humic-type peak C increased in intensity and peak M disappeared. Optical characteristics of kelp leachates were most similar to field samples, consistent with minimal contributions from sea grass, a small component of the biomass at this site. Increases in aCDOM(300 nm) with decreases in S are attributed to the input of freshly produced autochthonous organic material at ebbing and flooding tides, from exudation and microbial processing of senescent plant wrack and nearshore macroalgal vegetation. Other allochthonous sources are hypothesized to be ground water seepage and terrestrial runoff
Exploring Stakeholdersâ Perceptions of Urban Growth Scenarios for Metropolitan Boston (USA): The Relationship Between Urban Trees and Perceived Density
Achieving multiple goals rather than trading one goal off for another is the essence of sustainability. Visualizing alternative futures in a participatory planning process helps disentangle complex planning issues particularly when stakeholders may perceive key goals as imposing potential tradeoffs, such as increased housing for a growing population and availability of green space. This study explored the effects of using visualization and scenarios as planning tools in a workshop with stakeholders in the Boston Metro Area, Massachusetts (USA), in achieving multiple benefits of sustainable future growth of the region. We applied mixed methods sequential explanatory design and a survey instrument with a landscape preference survey designed to garner stakeholders\u27 preference and acceptability of perceived urban density versus urban greening in four future growth scenarios reflecting multiple goals in sustainability. The results of the landscape preference survey demonstrated that increasing tree canopy appears to ameliorate the low ratings of high-rise buildings for the region\u27s urban development. In addition, the scenario planning process, especially the use of small group discussions, represented an effective tool in facilitating stakeholders\u27 discussion about achieving the multiple benefits of the three goals of sustainability: Environment, Economy, Equity. This study provided theoretical and applied insights for planners in the use of visualization and scenario planning methodologies to engage stakeholders in the participatory planning process. It revealed the potential for a policy decision shift among stakeholders in the Boston region, namely that higher density urban development would likely be more acceptable to them when combined with a simultaneous increase in tree canopy cover. Through practices like these, stakeholders are more likely to consider policies and designs that embrace a variety of goals for their communityâs future instead of simplistically placing one goal in opposition to another or trading them off against each other
Wildlife Habitat Management on College and University Campuses
With the increasing involvement of higher education institutions in sustainability movements, it remains unclear to what extent college and university campuses address wildlife habitat. Many campuses encompass significant areas of green space with potential to support diverse wildlife taxa. However, sustainability rating systems generally emphasize efforts like recycling and energy conservation over green landscaping and grounds maintenance. We sought to examine the types of wildlife habitat projects occurring at schools across the United States and whether or not factors like school type (public or private), size (number of students), urban vs. rural setting, and funding played roles in the implementation of such initiatives. Using case studies compiled by the National Wildlife Federationâs Campus Ecology program, we documented wildlife habitat-related projects at 60 campuses. Ten management actions derived from nationwide guidelines were used to describe the projects carried out by these institutions, and we recorded data about cost, funding, and outreach and education methods. We explored potential relationships among management actions and with school characteristics. We extracted themes in project types, along with challenges and responses to those challenges. Native plant species selection and sustainable lawn maintenance and landscaping were the most common management actions among the 60 campuses. According to the case studies we examined, we found that factors like school type, size, and location did not affect the engagement of a campus in wildlife habitat initiatives, nor did they influence the project expenditures or funding received by a campus. Our results suggest that many wildlife habitat initiatives are feasible for higher education institutions and may be successfully implemented at relatively low costs through simple, but deliberate management actions
Balancing Urban Biodiversity Needs and Resident Preferences for Vacant Lot Management
Urban vacant lots are often a contentious feature in cities, seen as overgrown, messy eyesores that plague neighborhoods. We propose a shift in this perception to locations of urban potential, because vacant lots may serve as informal greenspaces that maximize urban biodiversity while satisfying residentsâ preferences for their design and use. Our goal was to assess what kind of vacant lots are ecologically valuable by assessing their biotic contents and residentsâ preferences within a variety of settings. We surveyed 150 vacant lots throughout Baltimore, Maryland for their plant and bird communities, classified the lotâs setting within the urban matrix, and surveyed residents. Remnant vacant lots had greater vegetative structure and bird species richness as compared to other lot origins, while vacant lot settings had limited effects on their contents. Residents preferred well-maintained lots with more trees and less artificial cover, support of which may increase local biodiversity in vacant lots. Collectively, we propose that vacant lots with a mixture of remnant and planted vegetation can act as sustainable urban greenspaces with the potential for some locations to enhance urban tree cover and bird habitat, while balancing the needs and preferences of city residents
Exploring the Ecology of Establishing Oak Trees in Urban Settings of the Northeast
Urban forests notoriously lack diversity in the biological communities that inhabit them, from the age and species composition of street trees to wildlife populations. In reaction to invasions of nonnative insects and diseases as well as predicted response to climate change, an emerging number of community foresters and tree wardens are expanding their urban tree planting practices to include a broader assemblage of tree species. These include oaks, among other species able to tolerate and adapt to urban conditions. Oaks are potentially favorable in regions like the northeastern U.S., where they grow extensively in rural forests and demonstrate potential resistance to specific urban pests that have caused challenges for other historically popular and extensively planted street trees. Additionally, they are known to feature a number of wildlife benefits, and their ranges in the Northeast are predicted to expand under many future climate change forecast models. We examine the role of oaks in the urban environment through the lens of the urban forest diversity deficit, reviewing topics that include diversity recommendations, threats by nonnative insects and diseases, and the human-wildlife interface. The goal of this work is to encourage careful consideration of where and when to plant oak trees to help professionals address issues of uniformity, while achieving benefits for urban forest ecosystems and residents
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