Bird life in arctic Norway : a popular brochure /

Errata slip inserted.

Transactions ...

The following volumes contain monographs with special titles: v. 2, A new flora of Northumberland and Durham, by J.G. Baker and G.R. Tate. v. 6, A catalogue of the birds of Northumberland and Durham, by John Hancock. v. 9, A catalogue of place-names in Teesdale, by D. Embleton. v. 12, A catalogue of the Lepidoptera of Northumberland, Durham, and Newcastle-upon-Tyne, by J.E. Robson. vol. 1 (1902) Macro-Lepidoptera. v. 15, A catalogue of the Lepidoptera ... by J.E. Robson vol. II (1913) Micro-Lepidoptera. Ed. by John Gardner. new ser. v. 2, A preliminary list of Durham Diptera, with analytical tables, by W.J. Wingate.

New Mallophaga /

3: Reprinted from the Occasional papers of the California academy of sciences, vol. 6

The naturalist's library.

Engraved half-title in each volume.

From Blomidon to Smoky, and other papers,

"First published in different periodicals between the years 1890 and 1894."

Report upon ornithological specimens collected in the years 1871, 1872, and 1873 /

"Preliminary to the full report in the quarto series, vol. V, Zoology. The list of birds of Utah ... by Mr. Henshaw, appeared as a separate paper in the Annals of the Lyceum of natural history of New York, vol. xi, June, 1874."

Nature lovers library.

Earlier editions have titles: The people's natural history (1903) The library of natural history (1906) The standard library of natural history (1908)

Microhabitat Selection by Marine Mesoconsumers in a Thermally Heterogeneous Habitat: Behavioral Thermoregulation or Avoiding Predation Risk?

Habitat selection decisions by consumers has the potential to shape ecosystems. Understanding the factors that influence habitat selection is therefore critical to understanding ecosystem function. This is especially true of mesoconsumers because they provide the link between upper and lower tropic levels. We examined the factors influencing microhabitat selection of marine mesoconsumers – juvenile giant shovelnose rays (Glaucostegus typus), reticulate whiprays (Himantura uarnak), and pink whiprays (H. fai) – in a coastal ecosystem with intact predator and prey populations and marked spatial and temporal thermal heterogeneity. Using a combination of belt transects and data on water temperature, tidal height, prey abundance, predator abundance and ray behavior, we found that giant shovelnose rays and reticulate whiprays were most often found resting in nearshore microhabitats, especially at low tidal heights during the warm season. Microhabitat selection did not match predictions derived from distributions of prey. Although at a course scale, ray distributions appeared to match predictions of behavioral thermoregulation theory, fine-scale examination revealed a mismatch. The selection of the shallow nearshore microhabitat at low tidal heights during periods of high predator abundance (warm season) suggests that this microhabitat may serve as a refuge, although it may come with metabolic costs due to higher temperatures. The results of this study highlight the importance of predators in the habitat selection decisions of mesoconsumers and that within thermal gradients, factors, such as predation risk, must be considered in addition to behavioral thermoregulation to explain habitat selection decisions. Furthermore, increasing water temperatures predicted by climate change may result in complex trade-offs that might have important implications for ecosystem dynamics.