Results 71 to 80 of about 107,778 (307)

Kalahari vegetation: veld condition trends and ecological status of species

open access: yesKoedoe: African Protected Area Conservation and Science, 1991
Grazing intensity gradients were determined in the duneveld, river terrace and river bed habitats of the Kalahari Gemsbok National Park. Under increased grazing, a species composition characterised mostly by annual forbs and grasses results. In all three
N. Van Rooyen   +2 more
doaj   +1 more source

Saplings of significance: Nurturing cultural value of new tree plantings through participatory opportunities

open access: yesPeople and Nature, EarlyView.
Abstract Tree‐planting initiatives are a crucial part of international sustainability and climate action efforts. Yet, many of these initiatives fail to achieve their long‐term sustainability and climate goals. The role of community value is an often‐overlooked factor in promoting the success of new tree plantings.
Claire L. Narraway   +8 more
wiley   +1 more source

Subsurface Investigations of Cryo‐Hydrogeological Features in a High Arctic Catchment Under Transition

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Wawrzyniak Tomasz   +3 more
wiley   +1 more source

River Terraces along the Upper Mabechi River

open access: yesAnnals of The Tohoku Geographycal Asocciation, 1987
Formation of river terraces along the upper Mabechi River in northeast Japan is investigated tephrochronologically and its relation to piedmont gentle slope is discussed.Four terraces, that is, the Higher Terrace, Terrace I, Terrace II and Terrace III, are recognized in the study area.
openaire   +2 more sources

The surface features and soil pattern of the Hamilton basin [PDF]

open access: yes, 1967
The Holocene history of the Hamilton basin and development of the soil pattern are closely related. The basin was partly filled by the large alluvial fan of the Waikato River which partly buried a hilly, ash-covered landscape.
McCraw, J.D.
core   +1 more source

Bordos and Boundaries: Sustainable Agriculture in the High Altitude Deserts of Northwest Argentina, AD 850-1532 [PDF]

open access: yes, 2014
Bordos were essential for the long-term sustainability of agriculture in the high altitude desert of Antofagasta de la Sierra in Northwest Argentina during the Late (AD 850 – 1480) and Inca Period (AD 1480 – 1532).
Lane, Kevin John   +2 more
core   +1 more source

Effects of Surface Characteristics on the Existence of Isolated Permafrost in Northeastern Mongolia

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Isolated patches of permafrost, where ground thermal changes are affected by ecosystem factors such as vegetation cover rather than climate, may be vulnerable to environmental disturbances in semiarid regions. However, the impacts of ecosystem factors remain underevaluated in Mongolia.
Gansukh Yadamsuren   +9 more
wiley   +1 more source

Age of Ohakea Terrace, Rangitikei River [PDF]

open access: yesNew Zealand Journal of Geology and Geophysics, 1962
Abstract Gravel with logs of wood at Rangitawa Stream, Wellington land district, that has been radiocarbon-dated at 3,000 years before present was previously correlated with the gravel of the Ohakea Terrace. Loess is absent above the gravel with logs, but about a foot of loess overlies typical Ohakea Gravel.
J. D. Cowie, H. W. Wellman
openaire   +1 more source

Archeological Investigations on the Weyerhaeuser Land Exchange Sites, McCurtain County, Oklahoma: An Update [PDF]

open access: yes, 2001
This paper provides a brief overview of the testing work completed to date on sites within the Tiak Ranger District. Ouachita National Forest. McCurtain County, Oklahoma.
Etchieson, Meeks
core   +1 more source

Arbuscular mycorrhizal fungal inoculation increases the bioavailability of zinc and iron in wheat grain

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Bread wheat is an important crop that supplies calories and nutrients to the global population. Enhancing the concentrations and bioavailability of essential micronutrients in wheat is crucial for human nutrition, and we investigated whether arbuscular mycorrhizal (AM) fungi can contribute to the biofortification of wheat.
Thi Diem Nguyen   +5 more
wiley   +1 more source

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