28.10.2014 Views

Abstracts available here - Society for Conservation Biology

Abstracts available here - Society for Conservation Biology

Abstracts available here - Society for Conservation Biology

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

25th International Congress <strong>for</strong> <strong>Conservation</strong> <strong>Biology</strong> • Auckland, New Zealand • 5-9 December 2011<br />

These findings resulted in the <strong>for</strong>mation of <strong>Conservation</strong> Through Public<br />

Health (CTPH) in 2003, a registered Ugandan NGO and US non-profit,<br />

whose focus is the interdependence of wildlife health and human health in<br />

and around Africa’s protected areas. CTPH implements three integrated<br />

Population, Health and Environment (PHE) programs to address<br />

these issues: wildlife health monitoring, community public health and<br />

in<strong>for</strong>mation, communication and technology, through partnerships with<br />

governments and local communities.<br />

2011-12-08 15:00 Taking Eradication Funding and Measurable<br />

Outcomes One Step Further – Restoring Island Ecosystems<br />

Kappes, P*, Oregon State University; Jones, HP, UC Santa Cruz;<br />

Islands contain a significant proportion of global biodiversity. Seabirds<br />

are ecosystem drivers that support islands and their associated biodiversity<br />

through guano fertilization. Un<strong>for</strong>tunately, invasive mammals have ravaged<br />

insular ecosystems and seabird populations around the globe, resulting<br />

in devastating ecosystem-scale effects. In response to these dual threats,<br />

invasive mammals have been eradicated from islands throughout the world.<br />

The goal of these removal campaigns is to ecosystem recovery but it remains<br />

unclear if island ecosystems can recover passively, especially w<strong>here</strong> seabirds<br />

do not readily recover. We advocate that the island restoration community<br />

incorporate seabird restoration techniques into eradication projects to<br />

enhance conservation outcomes. Joining the two ef<strong>for</strong>ts allows practitioners<br />

to initiate seabird restoration soon after eradications, increasing the chances<br />

of luring any remaining birds with experience breeding at that location.<br />

Because considerable time and money is put into funding, public approval,<br />

planning, building infrastructure, and per<strong>for</strong>ming both eradication and<br />

seabird restoration projects, it makes sense to treat seabird restoration as<br />

part of eradication projects, rather than reinvesting time and money to<br />

initiate a new restoration project. We encourage practitioners to look <strong>for</strong><br />

opportunities to integrate seabird restoration and eradication programs, in<br />

order to truly restore island ecosystems and the biodiversity they support.<br />

2011-12-07 16:42 Should we use pedigrees to detect inbreeding<br />

depression when the founders might be related?<br />

Kardos, MK*, University of Montana; Luikart, G, University of<br />

Montana; Allendorf, FW, University of Montana;<br />

Habitat destruction and overexploitation of species may often decrease<br />

population sizes and increase the frequency of inbreeding (mating between<br />

close relatives). Accurately assessing individual inbreeding is necessary<br />

to fully understand its importance to individual fitness and population<br />

growth. The historically preferred method to measure inbreeding is to use<br />

a pedigree to calculate an individual’s inbreeding coefficient (F) which is<br />

the reduction in heterozygosity due to parents being related; this method<br />

assumes that the pedigree founders are both non-inbred and unrelated to<br />

one another. We used simulated populations with full pedigrees to assess<br />

the effects of violating these assumptions on the ability of F to approximate<br />

the true level of inbreeding and to estimate the strength of inbreeding<br />

depression. Violating the assumption of non-inbred pedigree founders had<br />

little effect of the relationship between F and the true level of inbreeding.<br />

However, when approximately 40-90% of pedigree founders were closely<br />

related, F was a poor approximation of the true level of inbreeding and the<br />

power to detect inbreeding depression was severely reduced, particularly<br />

when pedigrees containing fewer than ten generations were used. Our<br />

results suggest that pedigree-based estimates of inbreeding and its effects<br />

on fitness may be unreliable when a large proportion of pedigree founders<br />

are closely related.<br />

2011-12-06 14:45 Repair and Recovery of Damaged Nature<br />

Kareiva, P., The Nature Conservancy; Jones, H.*, UC Santa Cruz;<br />

Marvier, M., Santa Clara University; Fuller, E., The Nature<br />

Conservancy; Zavaleta, E., UC Santa Cruz;<br />

Human impacts on earth have been huge, and numerous environmental<br />

assessments have pointed out that the ability of ecosystem services to<br />

support human wellbeing are declining globally due to ecosystem damage.<br />

Moreover, ongoing growth in the human population and in human<br />

demands <strong>for</strong> food and energy are sure to further stress nature. A key<br />

question is to what extent can nature and ecosystems recover from damage<br />

and egregious environmental insults? We are undertaking a systematic<br />

examination of case studies of recovery and repair or lack of recovery<br />

and repair. Preliminary results suggest mean perturbation magnitudes are<br />

highest <strong>for</strong> agriculture, eutrophication and invasive species perturbations.<br />

Species abundances are affected more strongly than species diversity by<br />

perturbations and species diversity variables recovered more quickly than<br />

species abundance variables. Our analysis indicates authors’ interpretations<br />

sometimes do not match up with our objective recovery estimates, with<br />

authors tending to underplay recovery. Resilience decreases from annual<br />

species to those with longer generation times. Grasses have higher resilience<br />

than do tree species and invertebrates have much higher resilience than<br />

do birds and fish. We found no difference in resilience between different<br />

trophic levels. We hope to use these results to build recovery and resilience<br />

theory, help prioritize restoration projects, and identify the key metrics that<br />

drive ecosystem recovery following perturbations.<br />

2011-12-09 14:30 Implications of bird vs. monkey seed dispersal<br />

behavior <strong>for</strong> genetic structuring of palm populations<br />

Karubian, J, Tulane University; Ottewell, K*, Tulane University; di<br />

Fiore, A, New York University; Link, A, New York University;<br />

In tropical rain<strong>for</strong>ests, up to 85% of tree species rely on seed dispersal<br />

by frugivorous vertebrates, but many of these animals are declining as a<br />

result of overhunting and loss of habitat. The extent to which this will<br />

impact on the tree species they disperse is unclear as it is challenging to<br />

quantify seed dispersal patterns due to the long range movements of animal<br />

vectors. Some vertebrates, however, exhibit behaviors w<strong>here</strong>by seeds are<br />

moved to a particular destination (e.g. roosting sites) resulting in clumped<br />

distributions of seeds at these sites, allowing us insight into the implications<br />

of particular dispersal behaviors <strong>for</strong> seed survival and genetic structuring of<br />

plant populations. Here we examine the effects of destination-based seed<br />

dispersal behavior by two endangered large-bodied frugivorous vertebrates,<br />

Long-Wattled Umbrellabirds (Cephalopterus penduliger) and Spider<br />

Monkeys (Ateles belzebuth) on the genetic structuring of seedling pools of<br />

the widespread palm, Oenocarpus bataua, at <strong>for</strong>est sites in Ecuador. Using<br />

genetic identification techniques we quantify the number and diversity<br />

of seed sources represented in pools of seedlings found either in Male<br />

Umbrellabird leks or underneath Spider Monkey sleeping trees, relative<br />

to “background” seedling pools located away from these focal points. We<br />

show that vertebrate dispersal behavior can have a profound impact on the<br />

distribution of genetic diversity in recruiting populations of O. bataua,<br />

and that the loss of these dispersal agents is likely to have negative genetic<br />

consequences <strong>for</strong> the palm.<br />

2011-12-09 15:00 Collaborative fisheries research enhances<br />

assessments and fosters stakeholder support <strong>for</strong> marine science<br />

Kay, MC*, UC Santa Barbara; Lenihan, HS, UC Santa Barbara;<br />

Wilson, JR, UC Santa Barbara; Miller, CJ, Cali<strong>for</strong>nia Lobster and<br />

Trap Fisherman’s Association;<br />

Assessment of fish populations and conservation policies such as marine<br />

reserves is difficult due to high costs and logistical challenges. In recent<br />

years, however, scientists are finding traditionally unlikely allies among<br />

commercial fishermen whose tools and talents can enhance fisheries<br />

research. In this study we describe two projects that demonstrate the<br />

scientific benefits of collaborative fisheries research (CFR) between<br />

academic scientists and lobster fishermen in Santa Barbara, Cali<strong>for</strong>nia.<br />

The first project is a marine reserve assessment in which sampling with<br />

fishing gear expands spatio-temporal coverage through comparison with<br />

historical fishery catch/ef<strong>for</strong>t records and a concurrent port sampling<br />

program. These comparisons reveal a four to eight-fold increase in trap<br />

yield and 5–10% increase in the mean size (carapace length) of lobsters<br />

inside vs. outside of reserves. A second project mobilizes fishermen in a tagrecapture<br />

program that provides detailed in<strong>for</strong>mation about lobster growth<br />

and movement. We used these data to estimate mortality outside reserves<br />

(Z=0.53) using a novel stock assessment method that is low cost, reserve<br />

based, and stakeholder driven. Our program successfully fosters stakeholder<br />

buy-in <strong>for</strong> marine science, and does so <strong>for</strong> a traditionally contentious issue<br />

(reserves), as evidenced by lobster industry advocacy <strong>for</strong> expansion of our<br />

CFR program throughout Cali<strong>for</strong>nia to monitor lobster population status<br />

and reserve per<strong>for</strong>mance statewide.<br />

81

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!