Top Banner
11. September 2012 Richard Bleil - Jessica Gelhausen - Dr. Rainer Oppermann Arno Schanowski - Dr. Volker Späth Ecological enhancement of agricultural land in the Upper Rhine Plain Supported by
16
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: Upper Rhine presentation

11. September 2012

Richard Bleil - Jessica Gelhausen - Dr. Rainer Oppermann

Arno Schanowski - Dr. Volker Späth

Ecological enhancement of agricultural

land in the Upper Rhine Plain

Supported by

Page 2: Upper Rhine presentation

Background

Germany:

16.8 Mio ha agricultural area

→ At least 1.75 Mio ha of crops that

profit from insect pollination

wikimedia

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 2

Page 3: Upper Rhine presentation

Ecological

enhancement measures

Flower strips and areas

Effect on

pollinators?

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 3

Page 4: Upper Rhine presentation

The project area

The farm in Rheinmünster:

Enhancement area

Control area

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 4

Page 5: Upper Rhine presentation

Crops in 2010

… in the planned enhancement areaCorn

Cereals

Fallow

Other

The project area

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 5

Page 6: Upper Rhine presentation

Sampling 2010

Determination of status quo sweep-netting and observation on transects

grass ways and flower rich meadows / marginal structures

May - August

Wild bees

Butterflies

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 6

Page 7: Upper Rhine presentation

10 % Flower stripsTübinger Mischung

Visselhöveder

Insektenparadies

MEKA 1

Kultur-Natur-blüht-auf

Ecological

enhancements in 2011

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 7

Page 8: Upper Rhine presentation

Bee banks and nesting aids

Ecological

enhancements in 2011

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 8

Page 9: Upper Rhine presentation

• Observation and sweep-netting on transects

• Focus on flower strips, June – August

• Observation of behaviour (foraging / egg deposition)

• Search for nests in bee banks

Sampling 2011

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 9

Page 10: Upper Rhine presentation

Results

Butterflies Rheinmünster Dettenheim

Total number of species (2010) 16 16

Species in flower strips (2011) 12 14

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 10

Page 11: Upper Rhine presentation

Results

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 11

Wild bees Rheinmünster Dettenheim

Species in flower strips 48 54

Total number of species 2010 55 58

Individuals in flower strips 4000 3992

Individuals 2010 234 244

Page 12: Upper Rhine presentation

Results

Butterflies

• No substancial increase in species richness

• Flower strips predominantly used for foraging

• Almost exclusively ubiquitous species

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 12

Pieris rapae Inachis io Gonepteryx rhamni

Page 13: Upper Rhine presentation

Results

Wild bees

• No substancial increase in species richness

• Few rare species and specialists use the flower strips

• Enormously increased individual numbers

• Bee banks are used as nesting sites

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 13

Bombus lapidarius Bombus terrestris Oxybelus trispinosus

Page 14: Upper Rhine presentation

Conclusions

• Flower strips are intensively used and constitute effective

means of supporting local pollinator populations

• Floristic diversity and resource availability early in the year are

crucial for the promotion of faunal diversity / specialists

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 14

Page 15: Upper Rhine presentation

Prospect

• Diverse perennial mixtures have been chosen and sown

considering needs of endangered species

• Control areas will be examined in detail for comparation

• This year‘s data are being evaluated

Ecological enhancement of agricultural land in the Upper Rhine Plain

11. Septemeber 2012 15

Enhancement

area

Control area

Page 16: Upper Rhine presentation

Thank you very much for

your attention

11. September 2012

Richard Bleil - Jessica Gelhausen - Dr. Rainer Oppermann

Arno Schanowski - Dr. Volker Späth

Supported by