• العربية
  • Eng
  • עברית
Facebook
  • Turn Off Accessibility tools
  • Accessibility statement

    Accessibility statement

    We want everyone who visits the Ramat Hanadiv website to feel welcome and find the experience rewarding.

    What are we doing?

    To help us make the Ramat Hanadiv website a positive place for everyone, we've been using the Web Content Accessibility Guidelines (WCAG) 2.0. These guidelines explain how to make web content more accessible for people with disabilities, and user friendly for everyone.

    The guidelines have three levels of accessibility (A, AA and AAA). We’ve chosen Level AA as the target for the Ramat Hanadiv website.

    How are we doing?

    We've worked hard on the Ramat Hanadiv website and believe we've achieved our goal of Level AA accessibility. We monitor the website regularly to maintain this, but if you do find any problems, please get in touch.

    This accessibility statement was generated on 7th August 2014 using the Accessibility Statement Generator.

  • C C C
  • Keyboard Navigation
    You may skip between the website elements using the "TAB" key, Activate a link or button using the "Enter" key, Skip back to the previous element using the combination of SHIFT+TAB

The Effect of Grazing on Reproduction and Population Dynamics of the Mediterranean Geophyte Anemone Coronaria

The Mediterranean flora of Israel consists of about 1000 species, 10% of which are geophytes, mostly growing in open habitats. Anemone coronaria L, for example, is a beautiful geophyte, forming densely flowering fields that attract many visitors to open landscapes. Grazing may affect plant reproduction, survival and consequently population dynamics, but geophytes have underground regeneration buds and are considered to be grazing resistant. To date, only a few experimental studies have examined the mechanism of the impact of grazing on plant reproduction and population dynamics. In the present study we investigated the effect of cattle grazing on plant reproductive capacity and population densityof A. coronaria in northern Israel. Ten pairs of experimental plots were established, and one of each pair was fenced against grazing. Monitoring continued for five years. Two weeks of continuous cow grazing reduced the herbaceous biomass by 75% and the grass height by 90%, and increased solar radiation at ground level by 40%. Cows avoided eating  A. coronaria flowers but damaged mature plants by trampling. We found that the numbers of flowers and fruits per plant, as well as fruit-set were not affected by grazing, but the number of dispersal units per plant decreased from 0.8 to 0.4. Five years of grazing exclusion reduced the density of flowering plants from 13 to 6 plants/m2. and that of seedlings from 1.5 to 0.6 individuals/m2. The results indicate that dense annual herbaceous vegetation interferes with A.coronaria, mainly by limiting germination sites  and through competition for light. The fact that the average height of A.coronaria flowers was 26% greater in the absence of grazing implies that light is scarce for the geophyte when grasses are abundant. Grazing lowers competition from the herbaceous sward, and enhances seed germination and seedling establishment, plant growth and reproduction. In conclusion, grazing seems to be essential for the development and maintenance of large Anemone populations.
 
----------------------------------------------------
 
Racheli Schwartz-Tzachor, Ramat Hanadiv project, the Society for the Protection of Nature in Isreal.
Avi Perevolotsky,Department of Natural Resources ARO-the Volcani Center, Bet Dagan,Israel.
Rafi Yonatan, Department of Natural Resources ARO-the Volcani Center, Bet Dagan,Israel.
Gidi Ne'eman, Department of Biology,Faculty of Science and Science Education ,University of Haifa - Oranim ,Haifa ,Israel.
 
 

Useful Information

Opening Hours

Sun-Fri: 08:00-16:00
Sat: 08:00-16:00

Contact Us

Ramat Hanadiv
P.O.B 325
Zichron Ya'akov
3095202
Phone: 04-6298111
info@ramathanadiv.org.il

Directions

The entrance to Ramat Hanadiv..

Be the first to know!

Subscribe now to Ramat Hanadiv's newsletter
Be the first to know!
Subscribe to our newsletter and stay up to date
Cancel