Pattern and process of clonal growth in a common cattail (Typha latifolia L. ) population

Technical Report · Thu Dec 31 23:00:00 EST 1981

OSTI ID:6934098

Dickerman, J A

A detailed analysis of individually identified Typha latifolia shoots quantified the births, deaths, life histories and productivities of the shoots. Three levels of plant structure were addressed: Inter-shoot relationships, individual shoot behavior and leaf dynamics. Shoots emerged in three major emergence pulses each year, and were grouped by these pulses into three major cohorts. The first cohort emerged in early spring, grew throughout the growing season, and died in late autumn. The second cohort emerged in midsummer; 70 to 80 percent of these shoots died in autumn, while the remainder resumed growth in the following spring. The third cohort emerged in late summer and early autumn; 80 to 90 percent of all third cohort shoots resumed growth the following spring. An intrinsic or self-regulation of density through reallocation of assimilates between shoots and rhizomes adequately explained the density patterns. This regulation is based on the growth pattern and the differing roles of the cohorts: The first and third cohorts are predominately regenerative, while the second cohort is proliferative, and fills in shoot density if, in early spring, density is below a shoot saturation level that apparently effectively holds marsh space.

• Research Organization: Michigan State Univ., East Lansing (USA)
• DOE Contract Number: AC02-76EV01599
• OSTI ID: 6934098
• Report Number(s): DOE/EV/01599-219-Pt.4; COO-1599-219-Pt.4; ON: DE82021971
• Country of Publication: United States
• Language: English

Related Subjects

520100* -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
550100 -- Behavioral Biology
59 BASIC BIOLOGICAL SCIENCES
CATTAILS
DATA
DEMOGRAPHY
EXPERIMENTAL DATA
GROWTH
INFORMATION
NUMERICAL DATA
PLANT GROWTH
PLANTS
POPULATION DYNAMICS
PRODUCTIVITY
SEASONAL VARIATIONS
VARIATIONS