Nutrient co‐limitation in the subtropical Northwest Pacific

Northwest Pacific subtropical countercurrent on isopycnal surface in summer

[1] A three-dimensional absolute velocity field on the isopycnal surface in the northwest Pacific subtropical region in the summer is calculated from the Navy’s Generalized Digital Environmental Model (GDEM) climatological temperature and salinity data on a 0.5 0.5 grid using the P-vector method. GDEM for the area was built from historical (1930–1997) temperature and salinity profiles. The basi...

Nutrient Cycling in Forests of the Pacific Northwest

Ecosystem analysis has established nutrient cycling as an important area of ecology involving biological, chemical, and geological interactions. Studying the flow of elements through ecosystems provides us with a tool for understanding the functioning of ecosystems. For example, if an ecosystem component has a rapid flux of elements through it, or if it stores large amounts of an element, that ...

Starlings in the Pacific Northwest

Pacific Northwest Fungi

Epiphytic macrolichen communities were compared among forest stand types in the Blue River watershed of western Oregon. Stand types were defined by stand structure, according to age classes of the younger tree cohort and remnant tree retention. Remnant trees were those in an older cohort that remained following a stand disturbance that initiated tree regeneration, such as a timber harvest or na...

Pacific Northwest Fungi

Podosphaera (Sphaerotheca) euphorbiae on Euphorbia epithymoides (= E. polychroma, cushion spurge) is reported for the first time in North America. Neoerysiphe (Erysiphe) galeopsidis on Lamium amplexicaule (henbit), Blumeria (Erysiphe) graminis on Festuca idahoenis (Idaho fescue), Taphrina johansonii on Populus tremuloides (trembling aspen), and Taphrina occidentalis on Alnus rubra (red alder) a...