Importance of alternative food resources for browsing by roe deer on deciduous trees: The role of food availability and species quality

2006 ◽  
Vol 226 (1-3) ◽  
pp. 248-255 ◽  
Author(s):  
Barbara Moser ◽  
Martin Schütz ◽  
Karin E. Hindenlang
Keyword(s):  
Food Availability ◽  
Roe Deer ◽  
Food Resources ◽  
Alternative Food ◽  
Deciduous Trees

scholarly journals Surface-Related Toxicity of Polystyrene Beads to Nematodes and the Role of Food Availability

2020 ◽  
Vol 54 (3) ◽  
pp. 1790-1798 ◽  
Author(s):  
Marie-Theres Mueller ◽  
Hendrik Fueser ◽  
Lam Ngoc Trac ◽  
Philipp Mayer ◽  
Walter Traunspurger ◽  
...  
Keyword(s):  
Food Availability ◽  
Polystyrene Beads

scholarly journals PERANAN TUMBUHAN LIAR DALAM KONSERVASI SERANGGA PENYERBUK ORDO HYMENOPTERA

2016 ◽  
Vol 10 (2) ◽  
pp. 195
Author(s):  
Erniwati Erniwati ◽  
Sih Kahono
Keyword(s):  
Flowering Time ◽  
Food Resources ◽  
Wild Plants ◽  
Cultivated Plants ◽  
Applied Study ◽  
Insect Pollinators ◽  
Cultivated Plant ◽  
Dry Seasons

The role of the wild plants in relation to the conservation of the Indonesian insectpollinators was studied at several areas of Java. Three of direct observationmethods were applied: study of biodiversity and observation on the wild flowersand the insect pollinators as well, and the behaviour of the insects. The flowersof wild plants were relatively smaller and paler in colour, however they were moreattractive to insect pollinators than cultivated plants. Flowering time of the wildplants was mostly during wet seasons, contrary to that of the cultivated plantswhich was mostly during dry seasons. Our observation indicated that these wildplants are the food resources of insect pollinators during wet seasons. Observationdata support the importance of wild plants to supply food to insect pollinatorsduring wet seasons. Management of wild and cultivated plant environments isnecessary to conserve insect pollinators.

Introduction

2017 ◽  
Author(s):  
Alison Hope Alkon ◽  
Julie Guthman
Keyword(s):  
Food Systems ◽  
Alternative Food ◽  
Transformative Change ◽  
Political Transformation ◽  
Strategic Choices ◽  
Alternative Food Systems ◽  
Race And Class ◽  
To Come ◽  
Economic Inequalities

This chapter argues that food activists need to look beyond the politics of their plates to engage with broader questions of racial and economic inequalities, strategy and political transformation. It grounds the examples that follow in two ongoing scholarly debates. The first regards the role of inequalities, particularly of race and class, in shaping past and present industrial and alternative food systems. The second looks to strategies and tactics. While some have argued that the provision of relatively apolitical alternatives to industrial food systems lays the groundwork for transformative change, the editors of this volume urge activists to follow those profiled in this book towards more cooperative, oppositional and collective strategic choices. The introduction ends with an overview of the chapters to come.

scholarly journals The freshwater mysid Mysis diluviana (Audzijonyte & Väinölä, 2005) (Mysida: Mysidae) consumes detritus in the presence of Daphnia (Cladocera: Daphniidae)

2020 ◽  
Vol 40 (5) ◽  
pp. 520-525
Author(s):  
Jessica E Griffin ◽  
Brian P O’Malley ◽  
Jason D Stockwell
Keyword(s):  
Food Resources ◽  
Trophic Levels ◽  
Arctic Lakes ◽  
Mysis Relicta ◽  
Combination Treatments ◽  
Mysis Diluviana ◽  
Benthic Food ◽  
Benthic Resources ◽  
Trophic Role

Abstract Freshwater mysids of the Mysis relicta group are omnivorous macroinvertebrates that form an important link between fishes and lower trophic levels in many north temperate to Arctic lakes, where they exhibit diel vertical migration (DVM) to exploit subsurface food-rich layers at night. Benthic food resources have been assumed to be less important for mysid diets than pelagic zooplankton. Studies have nevertheless indicated that mysids consume benthic sedimented detritus, calling this assumption into question. We conducted a food-choice experiment to evaluate the feeding preferences of Mysis diluviana (Audzijonyte & Väinölä, 2005) by presenting field-caught specimens in individual foraging arenas with multiple choices of food. Experimental food treatments included a preferred pelagic prey (Daphnia), a presumed less desirable benthic resource (detritus), and a combination of both. We hypothesized that M. diluviana 1) prefers Daphnia over detritus and consumes only Daphnia in combination treatments, and 2) would not consume detritus except when detritus was the only food source available. Contrary to our hypothesis, M. diluviana readily consumed detritus in the presence of Daphnia. Mysis diluviana unexpectedly consumed more individuals of Daphnia in the presence rather than in the absence of detritus. Our results demonstrate that mysids take advantage of benthic food resources even in the presence of a presumably preferred zooplankton prey, calling to question the long-held assumption that benthic resources are unimportant when considering the trophic role of freshwater mysids of the M. relicta group.

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