Publications by Tim Carruthers

IAN is committed to producing practical, user-centered communications that foster a better understanding of science and enable readers to pursue new opportunities in research, education, and environmental problem-solving. Our publications synthesize scientific findings using effective science communication techniques.

People and Oceans: Managing marine areas for human well-being (Page 1)

People and Oceans: Managing marine areas for human well-being

Samonte G, Bunce Karrer L, Orbach M
·
13 September 2010

Although much research has been done on the ecological benefits and challenges of marine resource management, comparatively little insight has been gained into the benefits and challenges of the human well-being aspects. This document addresses this gap by building on existing knowledge and synthesizing over 20 social science studies conducted over the past five years in 19 countries, involving over 35 scientists, and drawing on experiences in 52 marine managed areas (MMAs) worldwide.

Read more

National Park of American Samoa (Page 1)

National Park of American Samoa

Jane Hawkey, Tim Carruthers ·
10 September 2010

This two-page flyer, created in collaboration with the National Park Service's National Park of American Samoa, will be distributed by the park to Samoan community and church groups and schools, as well as to park visitors, to promote good stewardship and sustainable use of the unique and fragile natural resources found in these remote South Pacific islands.

Read more

Integrating and Applying Science: A handbook for effective coastal  ecosystem assessment (Page 1)

Integrating and Applying Science: A handbook for effective coastal ecosystem assessment

Longstaff BJ, Carruthers TJB, Dennison WC, Lookingbill TR, Hawkey JM, Thomas JE, Wicks EC, Woerner J ·
10 May 2010

Vast areas of the globe's coastal zone have experienced significant declines in ecosystem health. Deteriorating water quality, loss and alteration of vital habitats, and reduced populations of fish and shellfish are some of the major changes recorded. Establishing and running an effective assessment program is a complex process that necessitates strategic collaboration and partnerships between many individuals and agencies.

Read more

Chapter 6: Ecological report cards: integrating indicators into report cards

Williams MR, Longstaff BJ, Wicks EC, Carruthers TJB, and Florkowski LN ·
2010

This chapter continues the discussion of ecological indicators but with the specific application of producing ecological report cards. It explains the reasons for producing report cards, the steps to produce indicators based on ecological thresholds, and the process of combining indicators into overarching indices. Ecological report cards, like the indicators that they are based on, are one of the most important products for directing data collection and analysis.

Read more

Chapter 8: Environmental statistics: balancing simplicity and explanatory power

Kimmel DG, Townsend H, Carruthers TJB, and Fertig BM ·
2010

One of the most important goals of a coastal assessment program is to increase the knowledge of individuals and agencies who make management decisions. Information must be presented in an easy-to-understand format and supported by quantitative analyses. Quantitative analyses often involve applying statistical techniques that are used to visualize, describe, and model data.

Read more

Chapter 9: Environmental models: providing synthesis, analysis, simulation, and prediction

Lookingbill T, Carruthers TJB, Testa JM, Nuttle WK, and Shenk G ·
2010

Models can act as an interface among scientists, managers, and the public to build a shared understanding of the status and trends of coastal resources (Figure 9.1). Environmental models can be an effective way of synthesizing large quantities of environmental data. These models can assume a variety of forms and be used to address many different types of research questions.

Read more

Eastern oyster (Crassostrea virginica) [delta]15N as a bioindicator of nitrogen sources: Observations and modeling (Page 1)

Eastern oyster (Crassostrea virginica) [delta]15N as a bioindicator of nitrogen sources: Observations and modeling

Fertig BM, Carruthers TJB, Dennison WC, Fertig EJ, and Altabet MA ·
2010

Stable nitrogen isotopes ([delta]15N) in bioindicators are increasingly employed to identify nitrogen sources in many ecosystems and biological characteristics of the eastern oyster (Crassostrea virginica) make it an appropriate species for this purpose. To assess nitrogen isotopic fractionation associated with assimilation and baseline variations in oyster mantle, gill, and muscle tissue [delta]15N, manipulative fieldwork in Chesapeake Bay and corresponding modeling exercises were conducted.

Read more

Integrating and Applying Science: A practical handbook for effective coastal ecosystem assessment

Longstaff BJ, Carruthers TJB, Dennison WC, Lookingbill TR, Hawkey JM, Thomas JE, Wicks EC, and Woerner JL (eds) ·
2010

Vast areas of the globe's coastal zone have experienced significant declines in ecosystem health. Deteriorating water quality, loss and alteration of vital habitats, and reduced populations of fish and shellfish are some of the major changes recorded. Regardless of the differences between cultures, climate regions, and population pressures, integrated management and assessment is required to solve coastal environmental problems.

Read more

Long-Term Trends in Submersed Aquatic Vegetation (SAV) in Chesapeake Bay, USA, Related to Water Quality (Page 1)

Long-Term Trends in Submersed Aquatic Vegetation (SAV) in Chesapeake Bay, USA, Related to Water Quality

Orth RJ, Williams MR, Marion SR, Wilcox DJ, Carruthers TJB, Moore KA, Kemp WM, Dennison WC, Rybicki N, Bergstrom P, and Batiuk RA ·
2010

Chesapeake Bay supports a diverse assemblage of marine and freshwater species of submersed aquatic vegetation (SAV) whose broad distributions are generally constrained by salinity. An annual aerial SAV monitoring program and a bi-monthly to monthly water quality monitoring program have been conducted throughout Chesapeake Bay since 1984. We performed an analysis of SAV abundance and up to 22 environmental variables potentially influencing SAV growth and abundance (1984-2006).

Read more

The legacy of Kalaupapa National Historical Park (Page 1)

The legacy of Kalaupapa National Historical Park

Jane Hawkey, Tim Carruthers ·
21 December 2009

The intertwined cultural and natural history of the National Park Service (NPS) Kalaupapa National Historical Park (KALA) on the Hawaiian island of Molokai is represented in this poster intended for local and visitor audiences. For more than one hundred years, Hansen's disease (leprosy) patients were forced into exile on this remote peninsula. The unique native plants and animals found here are challenged by invasive species, overfishing, pollution, and climate change.

Read more