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Highlights

Botany

Flore d’Afrique centrale – Spermatophyta, nouvelle série.

NL: In Centraal Afrika is de familie Ericaceae vertegenwoordigd door de geslachten Erica (7 soorten), Agarista (1 soort) en Vaccinium (1 soort). Dit deel omvat gebruikersvriendelijke sleutels tot alle taxa alsmede 5 gedetailleerde illustraties. De familie is beperkt tot de submontane en montane delen van het gebied dat door deze Flora wordt bestreken. Voor alle soorten is er een volledige beschrijving, meest belangrijke synoniemen, gegevens over hun verspreiding, habitat, lokale namen en gebruik alsook referenties naar additionele literatuur en citatie van representatieve herbariumexemplaren. 5 gedetailleerde tekeningen. 

ENG: In Central Africa, the family Ericaceae is represented by the genera Erica (7 species), Agarista (1 species) and Vaccinium (1 species). This volume includes user-friendly keys to all taxa as well as 5 detailed full-page illustrations. The family is restricted to submontane and montane parts of the area covered by this Flora. All species come with a full description, most important synonyms, data on their distribution, habitat, vernacular names and uses, as well as references to additional literature and the citation of representative herbarium specimens. 5 detailed drawings. 

FR: En Afrique centrale, la famille des Ericaceae est représentée par les genres Erica (7 espèces), Agarista (1 espèce) et Vaccinium (1 espèce). Ce volume comprend des clefs conviviales à tous les taxons ainsi que 5 illustrations détaillées. La famille est limitée aux parties submontagnardes et montagnardes de la zone couverte par cette Flore. Toutes les espèces sont livrés avec une description complète, synonymes les plus importantes, les données sur leur distribution, l'habitat, les noms vernaculaires et les usages, ainsi que des références à la littérature supplémentaire et la citation des spécimens d'herbier représentatives. 5 dessins détaillés.

9,00 EUR

Die neue, große und umfassende Flora der Kanarischen Inseln

Im vorliegenden Werk werden auf 1.300 Seiten über 2.000 Farn- und Blütenpflanzen der Kanarischen Inseln in Wort und Bild dargestellt. Fast alle der etwa 650 endemischen Sippen werden mit einem oder mehreren Fotos abgebildet. Hinzu kommen zahlreiche, meist mediterrane, eingebürgerte und invasive Arten.

Über 2.400 Farbfotos, darunter zahlreiche Detailaufnahmen, 

ermöglichen eine sichere Bestimmung der auf den Kanaren vorkommenden Arten. Im Text finden sich außerdem Angaben zu 200 weiteren Arten, wie man sie unterscheidet und auf welchen Inseln sie vorkommen.

Im einleitenden Teil werden die einzelnen Vegetationsstufen beschrieben, des Weiteren die Inseln und ihre Entstehung und die Entwicklung der Flora.

Dieses Buch ist eine unverzichtbare Ergänzung zu den bisher vorliegenden Bestimmungsbüchern. Unentbehrlich ist es für alle Pflanzenliebhaber der Kanaren: für Botaniker, Studenten, Lehrer als auch für Touristen.

99,00 EUR

Available in December 2015

About the e-book

On 21 December 2011 Carex Europaea, volume 1, was published. This book was sold out rather quickly, so now has been decided to produce an updated e-book version. In the e-book some improvements are made on the text of the 2011 version. Besides, literature within the period 2011-2015 has been taken into account.

This e-book is a documentary book about the nomenclature and distribution of European taxa and hybrids within the genus Carex L. (Cyperaceae). Of all European taxa are given their Accepted Names and all known synonyms both with full citation. Altogether there are about 4500 names involved. Of all taxa is given their distribution within Europe per country and worldwide is given their general distribution. Providing they exist the chromosome numbers (2n) are given for Accepted taxa. 

All known European hybrids are mentioned, most of them provided with a name, the others with only their hybrid formula. Of all hybrids is given their European distribution as well, albeit probably incomplete.

Finally about 30 taxa are regarded to be introduced in Europe.

In the back of the book almost 150 pages present full colour photos of about 2/3 of all European species and some hybrids. The photos are meant “to give all the names a face”.

Seven Appendices complete this book. Listed are all authors with their full name lifetime/year of birth and country/countries. All the abbreviated publications used in the main text of chapter 2 and 3 are fully cited. Finally there are lists of “Carices named after”, a list of all the countries and islands, a list of “Interesting websites”, an Appendix with Introduced taxa and one with Question marks.

Finally an Index with all the Synonyms and one with Taxa from outside Europe are given.

This e-book aims to be a reference work for everybody working in the field of Botany or Nature Management.

 

 

59,50 EUR

Recently Published

Kommunikation & Beratung

Insights into Farmer Citizen Science in Honduras

Farmer-participatory methods have become widespread in agricultural research for development. Researchers and donors have increasingly recognised that highly diverse local challenges to agricultural production, including climate change, may not be solved by top-down generic approaches, but require farmer-selected solutions. In participatory variety selection (PVS), for example, groups of farmers jointly select locally suitable germplasm varieties. But such a group-based participatory approach to variety selection for climate adaptation also brings new limitations: Farmer attendance is often limited, a shared plot does not always represent every participant’s on-farm conditions well, and PVS is difficult to scale because it relies on organised farmer groups and high external facilitation efforts.

This study explores a pathway to out-scaling PVS by using new methods from citizen science, which has become popular recently especially in ecological and environmental research. In Crowdsourcing Crop Improvement (CCI), many farmers perform a small experiment on their farm by growing small quantities of just three alternative crop varieties, observing their growth along the growing period, and reporting simple observations to researchers. This way, farmers may experientially discover a variety that suits their site-specific needs and preferences better than the current one. Researchers, on the other hand, may use CCI as a research tool to screen new crosses and validate new varieties by farmer-generated data from a large range of locations and environments, as well as to disseminate genetic diversity in the landscape. Based on intensive fieldwork in four regions of Honduras, Central America, and using a mix of qualitative and quantitative methods, such as choice experiments, this study evaluates CCI for its appropriateness to serve both farmers and researchers.

25,60 EUR

Farming & Rural Systems Economics

Village Computable General Equilibrium modelling Approach

Poverty is the biggest challenge in Ethiopia. Low income, famine and drought and rain fed agriculture makes Ethiopia one of the poorest countries in the world. To address this problem, the country has employed various development efforts. Productive Safety net program is one of the endeavors to reduce chronic poverty in rural areas of Ethiopia. The book covers the direct and indirect impacts of the program on households’ welfare, village economic linkage and consumption behavior. It includes the application of both Village and National CGE models together with econometrics method. Moreover, SAM multiplier has been employed to understand interactivity linkages in the village economy. The study was conducted using 150 households, among which 75 are beneficiary of the productive safety net program and the remaining are non-beneficiary households. Hence, the book gives empirical evidence on the effects of the program on poverty, income inequality, consumption behavior of households and inters- production activity linkages in the village of Harwobello, in Amahara regional state. Based on the empirical evidence, the book suggests the way productive safety net further enables households to improve welfare and create strong economic linkage in the rural villages in Ethiopia.

28,00 EUR

Case Study In Ha Tay, Vietnam

Economic reform has brought significant achievements to Vietnam: the annual GDP growth increased at an average of 7% between 1986 and 2008 and 5.5% between 2008 and 2015. However, Vietnam is still an underdeveloped country characterized by large productivity gaps between agriculture and other sectors. The low productivity in agriculture has led to a decrease in its contribution to the national economy. This book aims to investigate the structural change in agriculture in term of land use, employment and agricultural production and also evaluate the impact of these changes on rural household income. The study found that structural change in Vietnam’s agriculture no longer follows normal globalization trends in terms of land accumulation. The number of small farms is increasing as opposed to decreasing, which has been the case in most developed countries. The rationale behind this is that the diversification of economic activities helps HHs earn more income to satisfy their basic needs. Therefore, the rural labor can cultivate with a very small size as a part time farming job. For these smallest farms, agricultural activity is self-sufficiency, and diversification with non-farm activities plays a significant role in gaining household income.  However, diversification into nonfarm activities of the rural laborers is the main reason making the progress of economic structural change in agriculture is slowing down. Finally, the study provides several policy implications to improve the household income and also to promote the process of economic structural change in the sector.

28,00 EUR

Botany

Backhuys Publications

Family Eurycercidae (Branchiopoda: Cladocera: Anomopoda)

The Cladocera (Crustacea: Branchiopoda) are a group of microscopic crustaceans that are dominant in continental water bodies of almost every type (Dumont & Negrea, 2002; Forró et al., 2008). They have become model objects for evolutionary, genetic, and ecological investigations that use different methods and approaches (Lampert, 2011; Smirnov, 2014). The family Eurycercidae Kurz, 1875 emend. Dumont & Silva-Briano, 1998, with the single genus Eurycercus Baird, 1843, is a remarkable group of the order Anomopoda Sars, 1865 (Crustacea: Branchiopoda), currently including 19 formal taxa at the species-group level, published and available according to the ICZN (2000). Among these, 13 are regarded as valid at this moment. Some of them are among the largest representatives of the cladocerans. They inhabit the littoral zone (preferring areas covered by macrophytes) in permanent water bodies in Eurasia and North America, more rarely in Africa and South America (Frey, 1971; Smirnov, 1971, 1974) and sometimes have an important role in freshwater ecosystems. Eurycercids consume decomposing organic matter, bacteria, and algae and, at the same time, are important food items for some species of fish. Especially in Arctic waters they make up a significant element in the fish diet (Björnsson, 2001; Bekker, 2012). The remains of Eurycercus (head shields, postabdomens etc.) are well preserved in lake bottom deposits (Frey, 1959; Szeroczyńska & Sarmaja-Korjonen, 2007; Smirnov, 2011; Korosi & Smol, 2012), and due to this the eurycercids are also utilized in palaeolimnological reconstructions of palaeoclimate, water level changes, etc. But despite their significant role in freshwater ecosystems, many aspects of eurycercid biology have been studied inadequately. Even their taxonomy remained confused until the last decade.

This monograph is an attempt to summarize the available data on taxonomy and  distribution of all currently known species of the genus. In contrast to a previous volume in this series on Ilyocryptus (Kotov & Štifter, 2006), we can confidently state that only few additional taxa of Eurycercus will be discovered in the future, i.e. in inadequately studied Arctic Canada, where few undescribed taxa of E. (Teretifrons) occur according to Hann (1990).

48,15 EUR

Botany

Die neue, große und umfassende Flora der Kanarischen Inseln

Im vorliegenden Werk werden auf 1.300 Seiten über 2.000 Farn- und Blütenpflanzen der Kanarischen Inseln in Wort und Bild dargestellt. Fast alle der etwa 650 endemischen Sippen werden mit einem oder mehreren Fotos abgebildet. Hinzu kommen zahlreiche, meist mediterrane, eingebürgerte und invasive Arten.

Über 2.400 Farbfotos, darunter zahlreiche Detailaufnahmen, 

ermöglichen eine sichere Bestimmung der auf den Kanaren vorkommenden Arten. Im Text finden sich außerdem Angaben zu 200 weiteren Arten, wie man sie unterscheidet und auf welchen Inseln sie vorkommen.

Im einleitenden Teil werden die einzelnen Vegetationsstufen beschrieben, des Weiteren die Inseln und ihre Entstehung und die Entwicklung der Flora.

Dieses Buch ist eine unverzichtbare Ergänzung zu den bisher vorliegenden Bestimmungsbüchern. Unentbehrlich ist es für alle Pflanzenliebhaber der Kanaren: für Botaniker, Studenten, Lehrer als auch für Touristen.

99,00 EUR