Results 181 to 190 of about 7,270,103 (304)

Which instruments to preserve forest biodiversity? [PDF]

open access: yes
In general, neither the social norms nor market dynamics stimulate spontaneously activities and practices conducive to biodiversity. The nature of public good of biodiversity leads to its rapid erosion.
Elodie Brahic
core  

Dental anomalies in Pleistocene African hippopotamuses from Olduvai Bed II

open access: yesThe Anatomical Record, EarlyView.
Abstract Hippopotamuses are key palaeoenvironmental indicators in African Pleistocene ecosystems due to their ecological dependence on permanent water bodies and their frequent representation in the fossil record. This study examines dental anomalies in Hippopotamus cf. gorgops from several localities in Bed II of Olduvai Gorge (Tanzania), dated to ca.
Darío Fidalgo   +4 more
wiley   +1 more source

Archived natural DNA samplers reveal four decades of biodiversity change across the tree of life. [PDF]

open access: yesNat Ecol Evol
Junk I   +16 more
europepmc   +1 more source

Twin pregnancies and the limits of the energetics of gestation and growth hypothesis

open access: yesThe Anatomical Record, EarlyView.
Abstract The “Energetics of Gestation and Growth” (EGG) hypothesis proposes that human birth timing and the associated secondary altriciality of human newborns is determined by limits in maternal metabolic capacity. According to this model, labor is triggered when the increasing fetal energy requirements exceed the expectant mother's maximum sustained ...
Cédric Cordey   +2 more
wiley   +1 more source

A new tool to quantify biodiversity change under landscape transformation. [PDF]

open access: yesEcol Appl
Hilário RR   +6 more
europepmc   +1 more source

Divergent biodiversity change within ecosystems. [PDF]

open access: yesProc Natl Acad Sci U S A, 2018
Magurran AE   +6 more
europepmc   +1 more source

Managing increasing environmental risks through agro-biodiversity and agri-environmental policies [PDF]

open access: yes
Agro-biodiversity can provide natural insurance to risk-averse farmers by reducing the variance of crop yield, and to society at large by reducing the uncertainty in the provision of public-good ecosystem services such as e.g. CO2 storage. We analyze the
Stefan Baumgärtner, Martin F. Quaas
core  

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga   +4 more
wiley   +1 more source

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