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Russell R. Hopcroft
University of Alaska Fairbanks
125Publications
32H-index
3,431Citations
Publications 125
Newest
#1Vittoria Roncalli (Pacific Biosciences)H-Index: 2
#2Matthew C. Cieslak (Pacific Biosciences)H-Index: 7
Last.Petra H. Lenz (Pacific Biosciences)H-Index: 26
view all 5 authors...
Marine pelagic species are being increasingly challenged by environmental change. Their ability to persist will depend on their capacity for physiological acclimatization. Little is known about limits of physiological plasticity in key species at the base of the food web. Here we investigate the capacity for acclimatization in the copepod Neocalanus flemingeri, which inhabits the Gulf of Alaska, a heterogeneous and highly seasonal environment. RNA-Seq analysis of field-collected pre-adults ident...
#1Toru Kobari (Kadai: Kagoshima University)H-Index: 13
#2Akash R. Sastri (UVic: University of Victoria)H-Index: 15
Last.Russell R. Hopcroft (UAF: University of Alaska Fairbanks)H-Index: 32
view all 5 authors...
Abstract Zooplankton growth rates ultimately shape the functional response of marine ecosystems to regional and global climate changes, because they determine the quantity and distribution of matter and energy within the zooplankton community available to higher trophic levels. Despite the variety of techniques available for measuring zooplankton growth, no or few approaches have been universally applied to the natural zooplankton populations or community and there are only a limited number of c...
#1Elizaveta Ershova (Shirshov Institute of Oceanology)
Last.Bodil A. Bluhm (UAF: University of Alaska Fairbanks)H-Index: 26
view all 8 authors...
Pelagic larval stages (meroplankton) of benthic invertebrates seasonally make up a significant proportion of planktonic communities, as well as determine the distribution of their benthic adult stages, yet are frequently overlooked by both plankton and benthic studies. Within the Arctic, the role of meroplanktonic larvae may be particularly important in regions of inflow from sub-Arctic regions, where they can serve as vectors of advection of temperate species into the Arctic. In this study, we ...
#1Kenneth O. Coyle (UAF: University of Alaska Fairbanks)H-Index: 31
#2Albert J. Hermann (Joint Institute for the Study of the Atmosphere and Ocean)H-Index: 4
Last.Russell R. Hopcroft (UAF: University of Alaska Fairbanks)H-Index: 32
view all 3 authors...
Abstract The northern Gulf of Alaska (GOA) shelf is dynamic spatially and temporally. With two major current systems and numerous eddies and meanders, interpretation of field data from ship-based observations at specific times and locations is complicated. We used the Regional Ocean Modeling System (ROMS) with an embedded nutrient-phytoplankton-zooplankton (GOANPZ) model to aid in understanding spatial-temporal patterns of productivity, chlorophyll concentration and biomass over the GOA shelf be...
#1Miriam J. Doyle (Joint Institute for the Study of the Atmosphere and Ocean)H-Index: 5
#2Suzanne L. Strom (WWU: Western Washington University)H-Index: 31
Last.Russell R. Hopcroft (UAF: University of Alaska Fairbanks)H-Index: 32
view all 8 authors...
Abstract Synthesis of four decades of Gulf of Alaska ichthyoplankton data indicates that species diversity and total abundance peaks during spring, a common pattern in temperate and sub-arctic ocean regions due to synchrony with the spring peak in plankton production. Nevertheless, fish larvae occur in the plankton at all times of year and peak abundance periods vary significantly by species and habitat. Larval size at hatching and at transformation to the juvenile stage is also highly variable ...
#1Jack A. Barth (OSU: Oregon State University)H-Index: 1
#2Jennifer L. Boldt (UAF: University of Alaska Fairbanks)H-Index: 8
Last.Evelyn B. Sherr (OSU: Oregon State University)H-Index: 24
view all 31 authors...
#1Vittoria Roncalli (Pacific Biosciences)H-Index: 2
#2Stephanie A. Sommer (Pacific Biosciences)H-Index: 3
Last.Petra H. Lenz (Pacific Biosciences)H-Index: 26
view all 6 authors...
Organisms inhabiting high-latitude environments have evolved adaptations, such as diapause to time reproduction and growth to optimize their survival. However, the physiological regulation of the timing of complex life histories is poorly understood, particularly for marine copepods, that diapause at depth. A member of the pelagic community of the sub-Arctic Pacific Ocean, Neocalanus flemingeri enters diapause in June. Egg production occurs in winter/spring. In order to characterize the transiti...
#1Claudine Hauri (UAF: University of Alaska Fairbanks)H-Index: 11
#2Seth L. Danielson (UAF: University of Alaska Fairbanks)H-Index: 22
Last.Thomas J. Weingartner (UAF: University of Alaska Fairbanks)H-Index: 36
view all 17 authors...
Abstract. Although Arctic marine ecosystems are changing rapidly, year-round monitoring is currently very limited and presents multiple challenges unique to this region. The Chukchi Ecosystem Observatory (CEO) described here uses new sensor technologies to meet needs for continuous, high-resolution, and year-round observations across all levels of the ecosystem in the biologically productive and seasonally ice-covered Chukchi Sea off the northwest coast of Alaska. This mooring array records a br...
#1Bastian Bentlage (U.O.G.: University of Guam)H-Index: 13
#2Karen J. Osborn (MBARI: Monterey Bay Aquarium Research Institute)H-Index: 11
Last.Allen Gilbert Collins (National Museum of Natural History)H-Index: 37
view all 6 authors...
#1Bastian Bentlage (U.O.G.: University of Guam)H-Index: 13
#2Karen J. Osborn (MBARI: Monterey Bay Aquarium Research Institute)H-Index: 11
Last.Allen Gilbert Collins (National Museum of Natural History)H-Index: 37
view all 6 authors...
Abstract Loss or stark reduction of the free-swimming medusa or jellyfish stage is common in the cnidarian class Hydrozoa. In the hydrozoan clade Trachylina, however, many species do not possess a sessile polyp or hydroid stage. Trachylines inhabiting freshwater and coastal ecosystems (i.e., Limnomedusae) possess a metagenetic life cycle involving benthic, sessile polyp and free-swimming medusa. In contrast, the paradigm is that open ocean inhabiting, oceanic trachylines (in the orders Narcomedu...
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