Katharyn E. Boyer

ORCID: 0000-0003-2680-2493
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About
Contact & Profiles
Research Areas
  • Coastal wetland ecosystem dynamics
  • Marine and coastal plant biology
  • Marine Biology and Ecology Research
  • Coral and Marine Ecosystems Studies
  • Marine and fisheries research
  • Ecology and Vegetation Dynamics Studies
  • Peatlands and Wetlands Ecology
  • Marine Bivalve and Aquaculture Studies
  • Isotope Analysis in Ecology
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Botany, Ecology, and Taxonomy Studies
  • Marine animal studies overview
  • Innovative Teaching Methods
  • Crustacean biology and ecology
  • Environmental DNA in Biodiversity Studies
  • Biological Control of Invasive Species
  • Fish Ecology and Management Studies
  • Geology and Paleoclimatology Research
  • Genetic diversity and population structure
  • Marine and coastal ecosystems
  • Geological formations and processes
  • Marine Ecology and Invasive Species
  • Experimental Learning in Engineering
  • Land Use and Ecosystem Services
  • Evaluation of Teaching Practices

San Francisco State University
2016-2025

San Francisco Estuary Institute
2023

University of North Carolina at Chapel Hill
2008-2014

University of California, Berkeley
2012

University of Washington
2012

University of Virginia
2011

University of Miami
2008

University of California, Los Angeles
1998-2006

United States Geological Survey
2004

San Diego State University
1996-2000

Abstract Despite the importance of coastal ecosystems for global carbon budgets, knowledge their storage capacity and factors driving variability in is still limited. Here we provide an estimate on magnitude stocks within a widely distributed marine foundation species throughout its distribution area temperate Northern Hemisphere. We sampled 54 eelgrass ( Zostera marina ) meadows, spread across eight ocean margins 36° latitude, to determine abiotic biotic influencing organic (C org...

10.1029/2018gb005941 article EN Global Biogeochemical Cycles 2018-09-19

Seagrass wasting disease, caused by parasitic slime nets in the genus Labyrinthula , affects seagrasses globally with outbreaks occurring at local to regional scales. Though prior research showed variation pathogenicity across strains, little is known about broad-scale diversity and biogeography of species. We used targeted amplicon-based high throughput sequencing (HTS) examine phylogeography species associated two seagrass hosts ( Zostera marina Thalassia testudinum ) collected from North...

10.3389/fmars.2024.1463968 article EN cc-by Frontiers in Marine Science 2025-01-10

Abstract Latitudinal gradients in species interactions are widely cited as potential causes or consequences of global patterns biodiversity. However, mechanistic studies documenting changes across broad geographic ranges limited. We surveyed predation intensity on common prey (live amphipods and gastropods) communities eelgrass ( Zostera marina ) at 48 sites its Northern Hemisphere range, encompassing over 37° latitude four continental coastlines. Predation declined with all coasts but more...

10.1002/ecy.2064 article EN publisher-specific-oa Ecology 2017-10-30

Significance Although the United States needs to expand its STEM (science, technology, engineering, mathematics) workforce, postsecondary institutions struggle retain and effectively teach students in disciplines. Using teaching techniques beyond lecture, such as pair discussions reflective writing, has been shown boost student learning, but it is unknown what proportion of faculty use these active-learning pedagogies. Here we describe DART: Decibel Analysis for Research Teaching, a...

10.1073/pnas.1618693114 article EN Proceedings of the National Academy of Sciences 2017-03-06

The influence of biodiversity on ecosystem functioning has been the focus much recent research, but role environmental context and mechanisms by which it may diversity effects production stability remain poorly understood. We assembled marine macroalgal communities in two mesocosm experiments that varied nutrient supply, at four field sites differed naturally conditions. Concordant with theory, addition promoted positive species richness algal growth first experiment; however, tended to...

10.1111/j.1600-0706.2009.17252.x article EN Oikos 2009-03-17

Many efforts to improve science teaching in higher education focus on a few faculty members at an institution time, with limited published evidence attempts engage across entire departments. We created long-term, department-wide collaborative professional development program, Biology Faculty Explorations Scientific Teaching (Biology FEST). Across 3 years of FEST, 89% the department's completed weeklong scientific institute, and 83% eligible instructors participated additional semester-long...

10.1187/cbe.17-06-0106 article EN cc-by-nc-sa CBE—Life Sciences Education 2018-01-12

Humans are changing the Earth's surface at an accelerating pace, with significant consequences for ecosystems and their biodiversity. Landscape transformation has far-reaching implications including reduced net primary production (NPP) available to support ecosystems, energy supplies consumers, disruption of ecosystem services such as carbon storage. Anthropogenic activities have global NPP terrestrial by nearly 25%, but loss from wetland is unknown. We used a simple approach estimate...

10.1016/j.scitotenv.2021.147097 article EN cc-by The Science of The Total Environment 2021-04-16

Distribution of Earth’s biomes is structured by the match between climate and plant traits, which in turn shape associated communities ecosystem processes services. However, that climate–trait can be disrupted historical events, with lasting impacts. As environment changes faster than at any time human history, critical questions are whether how organismal traits ecosystems adjust to altered conditions. We quantified relative importance current environmental forcing versus evolutionary...

10.1073/pnas.2121425119 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2022-08-01

The interactive effects of changing biodiversity consumers and their prey are poorly understood but likely to be important under realistic scenarios loss gain. We performed two factorial manipulations macroalgal group (greens, reds, browns) herbivore species (amphipods, sea urchin, fish) composition richness in outdoor mesocosms simulating a subtidal, hard‐substratum estuarine community North Carolina, USA. In the experiment where grazer treatments were substitutive, there no significant...

10.1890/07-1345.1 article EN Ecology 2008-09-01

Instructor Talk-noncontent language used by instructors in classrooms-is a recently defined and promising variable for better understanding classroom dynamics. Having previously characterized the Talk framework within context of single course, we present here our results surrounding applicability to noncontent novel course contexts. We analyzed eight additional biology courses their entirety 61 using an emergent sampling strategy. observed widespread use with variation amount category type...

10.1187/cbe.18-10-0215 article EN CBE—Life Sciences Education 2019-08-30

The global decline of marine foundation species (kelp forests, mangroves, salt marshes, and seagrasses) has contributed to the degradation coastal zone threatens loss critical ecosystem services functions. Restoration had variable success, especially for seagrasses, where a majority restoration efforts have failed. While most seagrass restorations track structural attributes over time, rarely do assess suite ecological functions that may be affected by restoration. Here we report on results...

10.1002/eap.2466 article EN Ecological Applications 2021-10-08

Because tall vegetation can enhance habitat quality in intertidal wetlands, we examined the effects of N fertilization on height growth a constructed cordgrass (Spartina foliosa) marsh San Diego Bay, where plants are short and soil low. We varied duration (therefore also quantity; 30 g N/m2 every month for 1, 2, 4, or 6 mo) timing (30 March, April, June, August) additions during 1993. By fertilizing second set replicates 6-mo treatment 1994, were able to examine persistence from 1993 vs....

10.1890/1051-0761(1998)008[0692:eonaot]2.0.co;2 article EN Ecological Applications 1998-08-01

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 262:111-123 (2003) - doi:10.3354/meps262111 Influence of initial tissue nutrient status tropical marine algae on response nitrogen and phosphorus additions Peggy Fong*, Katharyn E. Boyer, Krista Kamer, Karleen A. Boyle University California, Los Angeles, Department Organismic Biology, Ecology, Evolution, 621...

10.3354/meps262111 article EN Marine Ecology Progress Series 2003-01-01

Abstract At a salt marsh restoration site, fertilizer trials to improve height growth of Spartina foliosa (a C 4 perennial grass that can reach 140 cm) appeared favor Salicornia bigelovii (an annual 3 succulent under 40 cm tall) where the two species co‐occurred on plain. This observation prompted field experiment examine potential for nitrogen (N) addition shift community composition. Without N addition, total stem length and density S. did not respond presence or absence . But was added,...

10.1046/j.1526-100x.1999.07109.x article EN Restoration Ecology 1999-03-01

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 220:137-152 (2001) - doi:10.3354/meps220137 Nutrient content of macroalgae with differing morphologies may indicate sources nutrients for tropical marine systems Peggy Fong*, Krista Kamer**, Katharyn E. Boyer**, Karleen A. Boyle** Department Organismic Biology, and Evolution, University California, Los...

10.3354/meps220137 article EN Marine Ecology Progress Series 2001-01-01

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 451:107-118 (2012) - DOI: https://doi.org/10.3354/meps09569 A non-native amphipod consumes eelgrass inflorescences in San Francisco Bay Laura K. Reynolds1,2,*, Lindsey A. Carr1,3, Katharyn E. Boyer1 1Romberg Tiburon Center for Environmental Studies and Department of Biology, State University, Tiburon,...

10.3354/meps09569 article EN Marine Ecology Progress Series 2011-12-28

The seagrass Zostera marina is widely distributed in coastal regions throughout much of the northern hemisphere, forms foundation an important ecological habitat, and suffering population declines. Studies Atlantic Pacific oceans indicate that degree genetic differentiation location dependent. San Francisco Bay, California, USA, a high-current, high-wind environment where rafting seed-bearing shoots has potential to enhance connectivity among Z. populations. We tested from six locations,...

10.1093/jhered/ess022 article EN Journal of Heredity 2012-05-10

Diseases are ubiquitous in natural systems, with broad effects across populations, communities and ecosystems. However, the drivers of many diseases remain poorly understood, particularly marine environments, inhibiting effective conservation management measures. We examined biogeographical patterns infection foundational seagrass Zostera marina by parasitic protist Labyrinthula zosterae , causative agent wasting disease, >20° latitude two ocean basins. then identified characterized...

10.1098/rspb.2024.3055 article EN cc-by Proceedings of the Royal Society B Biological Sciences 2025-02-01

Estuaries provide critical habitat for many economically and ecologically valuable species that are adapted to a wide range of conditions environmental variability, but the often turbid water presents challenges monitoring efforts. This study explored fish use in Richardson Bay, California (a sub-estuary San Francisco Bay) at two points time: one following dry winter (2016) other historically wet (2017). Dual-frequency Identification Sonar (DIDSON) was used record finfish ray (>10 cm)...

10.15447/sfews.2025v23iss1art5 article EN cc-by San Francisco Estuary and Watershed Science 2025-03-20
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