Effects of Timing of Nutrient Addition on Competition Within and Between Two Annual Plant Species

1987 ◽  
Vol 75 (1) ◽  
pp. 229 ◽  
Author(s):  
B. L. Benner ◽  
F. A. Bazzaz
Keyword(s):  
Plant Species ◽  
Nutrient Addition ◽  
Annual Plant ◽  
Annual Plant Species

Can transgenerational plasticity contribute to the invasion success of annual plant species?

Oecologia ◽  
2014 ◽  
Vol 176 (1) ◽  
pp. 95-106 ◽  
Author(s):  
Annamária Fenesi ◽  
Andrew R. Dyer ◽  
Júliánna Geréd ◽  
Dorottya Sándor ◽  
Eszter Ruprecht
Keyword(s):  
Plant Species ◽  
Invasion Success ◽  
Annual Plant ◽  
Transgenerational Plasticity ◽  
Annual Plant Species

Population Dynamics of Two Competing Annual Plant Species

Ecology ◽  
1973 ◽  
Vol 54 (4) ◽  
pp. 723-740 ◽  
Author(s):  
Rebecca R. Sharitz ◽  
J. Frank McCormick
Keyword(s):  
Population Dynamics ◽  
Plant Species ◽  
Annual Plant ◽  
Annual Plant Species

THE EFFICIENCY OF THE STRATEGY OF MUCILAGINOUS SEEDS OF SOME COMMON ANNUALS OF THE NEGEV ADHERING TO THE SOIL CRUST TO DELAY COLLECTION BY ANTS

1997 ◽  
Vol 45 (4) ◽  
pp. 317-327 ◽  
Author(s):  
Yitzchak Gutterman ◽  
Shachar Shem-Tov
Keyword(s):  
Plant Species ◽  
Soil Surface ◽  
Loess Soil ◽  
Soil Crust ◽  
Experimental Plot ◽  
Annual Plant ◽  
Dry Soil ◽  
Annual Plant Species ◽  
Crust Surface ◽  
Plantago Coronopus

Groups of dry seeds of four annual plant species which occur in the Negev highlands were placed on a natural, dry or wet loess soil crust surface near Sede Boker on the Zin plateau during the autumn before the first rains, and on the first day with rain (1.15 mm). Ant nests ofMessor rugosuswere 8 to 14m from the experimental plot. The length of time it took these ants to collect the free or adhered seeds was observed. When the mucilaginous ombrohydrochoric seeds ofAnastatatica hierochuntica, Plantago coronopus, andCarrichtera annuaadhere to wet soil that remains moist, most of the seeds may have time to germinate in proper conditions before they are collected by ants. However, all but 5% of theReboudia pinnataseeds were collected within 2 h. The adhered seeds that had been moistened by wet soil crust and then dried, were collected by ants, in most cases, faster than when seeds and soil remained moist. Within 2 h none of the dry and free seeds situated on the dry soil surface remained. The first free seeds were collected after 7 min. Findings are discussed together with the mechanisms and strategies involved in seed dispersal by rain and germination of these plant species.

Germination of Winter Annual Species from a Rangeland Community Treated by Paraquat

Weed Science ◽  
1974 ◽  
Vol 22 (2) ◽  
pp. 185-187 ◽  
Author(s):  
Raymond A. Evans ◽  
James A. Young ◽  
Burgess L. Kay
Keyword(s):  
Plant Species ◽  
Annual Plant ◽  
Annual Species ◽  
Stellaria Media ◽  
Winter Annual ◽  
Annual Plant Species ◽  
Seed Characteristics ◽  
Germination Requirements

Three annual plant species — erect plantain (Plantago erectaMorris), common chickweed [Stellaria media(L.) Cyrill.], and silver hairgrass (Aira caryophylleaL.)—are commonly found and may dominate a unique flora on areas sprayed with paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) in cismontane rangelands of California. The basis of this phenomenon is shown to be temperature-related germination requirements, novel seed characteristics, and lack of competition.

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