Search Constraints
Filtering by:
Creator
Jann, Benjamin J.
Remove constraint Creator: Jann, Benjamin J.
Academic Affiliation
Fisheries and Wildlife
Remove constraint Academic Affiliation: Fisheries and Wildlife
1 - 7 of 7
Number of results to display per page
Search Results
-
- Creator:
- Clemens, Benjamin J.
- Abstract:
- Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid declines in abundance. These anadromous fish return to streams where they mature, spawn and die. It has been inferred that Pacific lamprey enter freshwater and reside for ~ 1 year before spawning. This long exposure to the freshwater environment may affect...
- Resource Type:
- Dissertation
- Full Text:
- DISSERTATION OF Benjamin J. Clemens for the degree of Doctor of Philosophy in Fisheries Science
-
- Creator:
- Clemens, Benjamin J., Mesa, Matthew G., Magie, Robert J., Young, Douglas A., and Schreck, Carl B.
- Abstract:
- We describe the migration distances and timing of the adult Pacific lamprey, Entosphenus tridentatus, in the Willamette River Basin (Oregon, U.S.A.). We conducted aerial surveys to track radio-tagged fish upstream of a major waterfall and hydropower complex en route to spawning areas. We detected 24 out of the 43 fish...
- Resource Type:
- Article
- Full Text:
- tridentatus, in the Willamette River, Oregon, U.S.A. Benjamin J. Clemens & Matthew G. Mesa & Robert J. Magie
-
- Creator:
- Clemens, Benjamin J., Sower, Stacia A., van de Wetering, Stan, and Schreck, Carl B.
- Abstract:
- We report the incidence of male intersex in adult Pacific lamprey (Entosphenus tridentatus (Richardson, 1836)) during their pre-spawning migration in fresh water. Although “hermaphrodites” have been suggested in other adult lampreys, this is the first detailed description and discussion of this phenomenon. A total of 0.5% of our adult Pacific...
- Resource Type:
- Article
- Full Text:
- ), with a brief discussion of intersex vs. hermaphroditism in lampreys (Petromyzontiformes) Benjamin J
-
- Creator:
- Ward, David L., Clemens, Benjamin J., Clugston, David, Jackson, Aaron D., Moser, Mary L., Peery, Chris, and Statler, David P.
- Abstract:
- The Pacific lamprey (Entosphenus tridentatus) is in decline in the Columbia River Basin, and translocating adult lamprey to bypass difficult migration corridors has been implemented since 2000. We describe and report results from two current translocation programs, provide context for use of translocation, and discuss potential benefits, risks, and uncertainties....
- Resource Type:
- Article
- Full Text:
- Benjamin J. Clemens Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR 97331
-
- Creator:
- Evans, Allen F., Hostetter, Nathan J., Roby, Daniel D., Collis, Ken, Lyons, Donald E., Sandford, Benjamin P., Ledgerwood, Richard D., and Sebring, Scott
- Abstract:
- We recovered passive integrated transponder (PIT) tags from nine piscivorous waterbird colonies in the Columbia River basin to evaluate avian predation on Endangered Species Act (ESA)-listed salmonid Oncorhynchus spp. populations during 2007–2010. Avian predation rates were calculated based on the percentage of PIT-tagged juvenile salmonids that were detected as passing...
- Resource Type:
- Article
- Full Text:
- Transponder Tags Allen F. Evans and Nathan J. Hostetter Real Time Research, Inc., 52 Southwest Roosevelt
-
- Creator:
- Mitra, Siddhartha, Kimmel, David G., Snyder, Jessica, Scalise, Kimberly, McGlaughon, Benjamin D., Roman, Michael R., Jahn, Ginger L., Pierson, James J., Brandt, Stephen B., Montoya, Joseph P., Rosenbauer, Robert J., Lorenson, Thomas D., Wong, Florence L., and Campbell, Pamela L.
- Abstract:
- Mesozooplankton (>200 μm) collected in August and September of 2010 from the northern Gulf of Mexico show evidence of exposure to polycyclic aromatic hydrocarbons (PAHs). Multivariate statistical analysis revealed that distributions of PAHs extracted from mesozooplankton were related to the oil released from the ruptured British Petroleum Macondo-1 (M-1) well...
- Resource Type:
- Article
- Full Text:
- . Kimmel,2,3 Jessica Snyder,2 Kimberly Scalise,1 Benjamin D. McGlaughon,2 Michael R. Roman,4 Ginger L
-
- Creator:
- Laurance, William F., Useche, D. Carolina, Rendeiro, Julio, Kalka, Margareta, Bradshaw, Corey J. A., Sloan, Sean P., Laurance, Susan G., Campbell, Mason, Abernethy, Kate, Alvarez, Patricia, Arroyo-Rodriguez, Victor, Ashton, Peter, Benitez-Malvido, Julieta, Blom, Allard, Bobo, Kadiri S., Cannon, Charles H., Cao, Min, Carroll, Richard, Chapman, Colin, Coates, Rosamond, Cords, Marina, Danielsen, Finn, De Dijn, Bart, Dinerstein, Eric, Donnelly, Maureen A., Edwards, David, Edwards, Felicity, Farwig, Nina, Fashing, Peter, Forget, Pierre-Michel, Foster, Mercedes, Gale, George, Harris, David, Harrison, Rhett, Hart, John, Karpanty, Sarah, Kress, W. John, Krishnaswamy, Jagdish, Logsdon, Willis, Lovett, Jon, Magnusson, William, Maisels, Fiona, Marshall, Andrew R., McClearn, Deedra, Mudappa, Divya, Nielsen, Martin R., Pearson, Richard, Pitman, Nigel, van der Ploeg, Jan, Plumptre, Andrew, Poulsen, John, Quesada, Mauricio, Rainey, Hugo, Robinson, Douglas, Roetgers, Christiane, Rovero, Francesco, Scatena, Frederick, Schulze, Christian, Sheil, Douglas, Struhsaker, Thomas, Terborgh, John, Thomas, Duncan, Timm, Robert, Urbina-Cardona, J. Nicolas, Vasudevan, Karthikeyan, Wright, S. Joseph, Arias-G, Juan Carlos, Arroyo, Luzmila, Ashton, Mark, Auzel, Philippe, Babaasa, Dennis, Babweteera, Fred, Baker, Patrick, Banki, Olaf, Bass, Margot, Bila-Isia, Inogwabini, Blake, Stephen, Brockelman, Warren, Brokaw, Nicholas, Bruehl, Carsten A., Bunyavejchewin, Sarayudh, Chao, Jung-Tai, Chave, Jerome, Chellam, Ravi, Clark, Connie J., Clavijo, Jose, Congdon, Robert, Corlett, Richard, Dattaraja, H. S., Dave, Chittaranjan, Davies, Glyn, Beisiegel, Beatriz de Mello, da Silva, Rosa de Nazarepaes, Di Fiore, Anthony, Diesmos, Arvin, Dirzo, Rodolfo, Doran-Sheehy, Diane, Eaton, Mitchell, Emmons, Louise, Estrada, Alejandro, Ewango, Corneille, Fedigan, Linda, Feer, Francois, Fruth, Barbara, Willis, Jacalyn Giacalone, Goodale, Uromi, Goodman, Steven, Guix, Juan C., Guthiga, Paul, Haber, William, Hamer, Keith, Herbinger, Ilka, Hill, Jane, Huang, Zhongliang, Sun, I. Fang, Ickes, Kalan, Itoh, Akira, Ivanauskas, Natalia, Jackes, Betsy, Janovec, John, Janzen, Daniel, Jiangming, Mo, Jin, Chen, Jones, Trevor, Justiniano, Hermes, Kalko, Elisabeth, Kasangaki, Aventino, Killeen, Timothy, King, Hen-biau, Klop, Erik, Knott, Cheryl, Kone, Inza, Kudavidanage, Enoka, Ribeiro, Jose Lahoz da Silva, Lattke, John, Laval, Richard, Lawton, Robert, Leal, Miguel, Leighton, Mark, Lentino, Miguel, Leonel, Cristiane, Lindsell, Jeremy, Ling-Ling, Lee, Linsenmair, K. Eduard, Losos, Elizabeth, Lugo, Ariel, Lwanga, Jeremiah, Mack, Andrew L., Martins, Marlucia, McGraw, W. Scott, McNab, Roan, Montag, Luciano, Thompson, Jo Myers, Nabe-Nielsen, Jacob, Nakagawa, Michiko, Nepal, Sanjay, Norconk, Marilyn, Novotny, Vojtech, O'Donnell, Sean, Opiang, Muse, Ouboter, Paul, Parker, Kenneth, Parthasarathy, N., Pisciotta, Katia, Prawiradilaga, Dewi, Pringle, Catherine, Rajathurai, Subaraj, Reichard, Ulrich, Reinartz, Gay, Renton, Katherine, Reynolds, Glen, Reynolds, Vernon, Riley, Erin, Roedel, Mark-Oliver, Rothman, Jessica, Round, Philip, Sakai, Shoko, Sanaiotti, Tania, Savini, Tommaso, Schaab, Gertrud, Seidensticker, John, Siaka, Alhaji, Silman, Miles R., Smith, Thomas B., de Almeida, Samuel Soares, Sodhi, Navjot, Stanford, Craig, Stewart, Kristine, Stokes, Emma, Stoner, Kathryn E., Sukumar, Raman, Surbeck, Martin, Tobler, Mathias, Tscharntke, Teja, Turkalo, Andrea, Umapathy, Govindaswamy, van Weerd, Merlijn, Rivera, Jorge Vega, Venkataraman, Meena, Venn, Linda, Verea, Carlos, de Castilho, Carolina Volkmer, Waltert, Matthias, Wang, Benjamin, Watts, David, Weber, William, West, Paige, Whitacre, David, Whitney, Ken, Wilkie, David, Williams, Stephen, Wright, Debra D., Wright, Patricia, Xiankai, Lu, Yonzon, Pralad, and Zamzani, Franky
- Abstract:
- The rapid disruption of tropical forests probably imperils global biodiversity more than any other contemporary phenomenon¹⁻³. With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to human encroachment and other environmental...
- Resource Type:
- Article
- Full Text:
- . Nature 403, 843–845 (2000). 2. Bradshaw, C. J. A., Sodhi, N. S. & Brook, B. W. Tropical turmoil—a