University of Maine

About: University of Maine is a education organization based out in Orono, Maine, United States. It is known for research contribution in the topics: Population & Ice sheet. The organization has 8637 authors who have published 16932 publications receiving 590124 citations. The organization is also known as: University of Maine at Orono.

The geography of biodiversity change in marine and terrestrial assemblages.

Abstract: Human activities are fundamentally altering biodiversity. Projections of declines at the global scale are contrasted by highly variable trends at local scales, suggesting that biodiversity change may be spatially structured. Here, we examined spatial variation in species richness and composition change using more than 50,000 biodiversity time series from 239 studies and found clear geographic variation in biodiversity change. Rapid compositional change is prevalent, with marine biomes exceeding and terrestrial biomes trailing the overall trend. Assemblage richness is not changing on average, although locations exhibiting increasing and decreasing trends of up to about 20% per year were found in some marine studies. At local scales, widespread compositional reorganization is most often decoupled from richness change, and biodiversity change is strongest and most variable in the oceans.

Predicting aqueous aluminium concentrations in natural waters

Abstract: Aluminium is a pH-sensitive element that can cause acute toxicity symptoms in some organisms at aqueous activities of 10 µM or less1–3. Scientists working on agricultural systems have long been concerned with the deleterious effects of aluminium on crop roots4,5. More recently, environmental scientists have reported a potentially harmful biogeochemical link between acidic deposition onto forest soils and aluminium toxicity in forest and aquatic communities of northeastern North America and northern Europe6–8. Because of this general interest in aluminium toxicity as an environmental threat, there have been renewed efforts to model the chemistry and transport of aqueous aluminium in soils and surface waters. Here we propose that much of the spatial and temporal variability in aqueous aluminium chemistry can be accounted for by a two-component equilibrium model involving a solid-phase humic adsorbent and an aluminium trihydroxide mineral phase. Inputs for the model are solution pH, copper-extractable organic aluminium and the titratable carboxyl content of soil humus.

Corporate reputation: a research agenda using strategy and stakeholder literature

Abstract: This article explores three literature bases in some depth: strategy, stakeholder/ social issues, and the newly emergingworks in reputation. The focus is on the potential research and practical ove...

Cutaneous Chytridiomycosis in Poison Dart Frogs (Dendrobates spp.) and White's Tree Frogs (Litoria Caerulea)

Abstract: 3. Brodey RS, Reid CF, Sauer RM: 1966, Metastatic bone neoplasms in the dog. J Am Vet Med Assoc 148:29–43. 4. Chin RP, Barr BC: 1990, Squamous cell carcinoma of the pharyngeal cavity in a Jersey black giant rooster. Avian Dis 34: 775–778. 5. Head KW: 1990, Tumors of the alimentary tract. In: Tumors in domestic animals, ed. Moulton JE, 3rd ed., pp. 347–435. University of California Press, Berkeley, CA. 6. Kotwall C, Sako K, Razak MS, et al.: 1987, Metastatic patterns in squamous cell cancer of the head and neck. Am J Surg 154: 439–442. 7. Latimer KS: 1994, Oncology. In: Avian medicine: principles and application, ed. Ritchie BW, Harrison GJ, Harrison LR, pp. 640–672. Wingers, Lake Worth, FL. 8. Pulley T, Stannard AA: 1990, Tumors of the skin and soft tissues. In: Tumors in domestic animals, ed. Moulton JE, 3rd ed., pp. 23–87. University of California Press, Berkeley, CA. 9. Rose ME: 1981, Lymphatic system. In: Form and function in birds, ed. King AS, McLelland J, vol. 2, pp. 341–384. Academic Press, London, England. 10. Shingaki S, Suzuki I, Kobayashi T, Nakajima T: 1996, Predicting factors for distant metastases in head and neck carcinomas: an analysis of 103 patients with locoregional control. J Oral Maxillofac Surg 54:853–857. 11. Tagaki M, Kayano T, Yamamoto H, et al.: 1992, Causes of oral tongue cancer treatment failures. Analysis of autopsy cases. Cancer 69:1081–1087. 12. Yager JA, Scott DW: 1993, The skin and appendages. In: Pathology of domestic animals, ed. Jubb KVF, Kennedy PC, Palmer N, 4th ed., vol. 1, pp. 531–738. Academic Press, San Diego, CA.

High-Frequency Holocene Glacier Fluctuations in New Zealand Differ from the Northern Signature

Abstract: Understanding the timings of interhemispheric climate changes during the Holocene, along with their causes, remains a major problem of climate science. Here, we present a high-resolution 10Be chronology of glacier fluctuations in New Zealand’s Southern Alps over the past 7000 years, including at least five events during the last millennium. The extents of glacier advances decreased from the middle to the late Holocene, in contrast with the Northern Hemisphere pattern. Several glacier advances occurred in New Zealand during classic northern warm periods. These findings point to the importance of regional driving and/or amplifying mechanisms. We suggest that atmospheric circulation changes in the southwest Pacific were one important factor in forcing high-frequency Holocene glacier fluctuations in New Zealand.