BOTANY WITH BASICS OF HYDROBOTANY (AQUATIC PLANTS OF UKRAINE) - B.Ye. Yakubenko - 2011

XIV. TOOLS AND METHODS FOR STUDYING AQUATIC VEGETATION

Aquatic Vegetation Description Forms

Class="center">Table 1. - Moss cover and Algae

General Remarks (distribution pattern, degree of homogeneity, condition, etc.)___________________________________

Thickness of moss cover: floating____________________________________________________________________

attached to the bottom________________________________________________________

Plant name	Abundance, ind./m²	Projective cover, %	Distribution pattern	Note

Water and soil sample no.______________________________________________________________________

Human impact________________________________________________________________________________

Degree of grazing by birds and animals___________________________________________________________

Note_________________________________________________________________________________________

Signature

Summary Table of plant distribution across water bodies

Plant name

Water bodies

Phragmites australis

Scirpus lacustris

Potamogeton perfoliatum

+++

Note. Species occurrence: +++ — mass; ++ — frequent (common); + — occasional and rare; — absent.

Recording form for phytomass determination

Association_____________________________ Mowing no. _____________________________________________

Water body (name and geographical Location)______________________________________________________

Date________________________________Location in the water body __________________________________

Depth_______________________________Bottom sediments (visual assessment) __________________________

Mowing method________________________________________________________________________________

Plant and its parts	Number of spec., ind.	Weight, g			Weighing date		Number of bags	Note
Plant and its parts	Number of spec., ind.	Fresh	Air- dry	Oven- dry	Fresh weight	Dry weight	Number of bags	Note
Common reed
Stems
leaves
inflorescences
Dry stems (standing dead crop)

Quantitative Characteristics of plant species

Plant name, height, cm	Number of specimens, ind.	Stem diameter (at base), spec./cm
Common reed
600-610	4	1 /2,2-1 /1,9-1 /2,3-1 /2,4
580-590	13	6/2,2-4/2,3-2,5-2/2,4



190-200	18	5/1,3-2/1,2-6/1,1-5/1,4

Following the final Processing of the biomass samples (weighing in air-dry and oven-dry states), the following tables characterizing the phytomass are compiled.

Sample No.

Sampling site, depth m,

bottom sediments

Date

Plant and its parts

Quantity, ind.

Height,

Diameter,

Weight, g

Weight loss upon drying, %

Max.

Mean

Max.

Mean

Fresh

Air-dry

Oven-dry

Phytocoenosis

Sample log for determining abundance and frequency

(occurrence) in the phytocoenosis

Phytocoenosis_________Trial plot No.___________Plot size ______________________

Plant

name

Quadrat numbers

Frequency, %

or abundance, ind.

…

Summary table of phytomass

__________________________________________________________________________Formations (associations)

in the lake (water body)_______________________________________________________________in 2011

(in this case, of the reed formation)

Lake _______________________

Number of samples	90
Date	25 VІ-25 VIII	VII
Dominant phenological phase	в, б, ц	б
Depth, m	0,1—1,5	0,15
Characterizing parameters
SHOOT density, ind./m2	19-385	200
including generative	None - 266	37
shoot height, cm
mean	700 - 300	160
maximum	130 - 350	220
Shoot diameter (at the base), cm
mean	0,4 - 0,8	0,6
maximum
Mass, g/m2
total samples
DM	620 - 8125	3560
ADM	260 - 3605	1540
ODM	230 - 3376	1390
leaves
DM	150 - 1960	980
ADM	60 - 680	980
ODM	58 - 643	347
Ratio of leaf DM to total sample DM, % 13.5 - 45.9		27,7
Mass loss upon drying, % of total sample
from DM to ADM	42.2 - 72.1	57.8
from DM to ODM	50.9 - 73.6	60,7
from ADM to ODM	5,5 - 8,6	7,0
leaves
from DM to ADM	40,0 - 74,3	61,2
from DM to ODM	44,6 - 75,7	68,8
from ADM to ODM	4,0 - 9,2	6,5

Note. When compiling data into the table for communities of different plant species, only parameters with obtained numerical values are used. DM - dry matter, ADM - air-dry matter, ODM - oven-dry matter.

Summary table of above-ground phytomass of formations (associations or other vegetation units recalculated per area) of Lake ___________ in 2011

Formation	Area, km²(m²)	Weight, g			Mass per area, thousand t
Formation	Area, km²(m²)	DM	ADM	ODM	DM	ADM	ODM

Total _________________

Summary table of areas occupied by formations (associations or other

vegetation units) in lake(s) _____________ in 2011

(visual estimation or instrumental survey)

Parameters	Lake	Lake	Lake
Overgrowth, %
Common reed formation Shining pondweed formation Total _____________________
Area, km²
Common reed formation Shining pondweed formation Total _____________________

Last update: 07/08/2026

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