In bromeliad phytotelma, anthropic disturbance does not affect the nematode trophic structure Cover

.blurhash-client-img { display: none !important; }

In bromeliad phytotelma, anthropic disturbance does not affect the nematode trophic structure

Journal of Nematology

Volume 52 (2020): Issue 1 (January 2020)

By: Alexandre Macedo Almeida, Janeo Eustáquio Almeida Filho and Ricardo Moreira Souza

Open Access

|Nov 2020

Figures & Tables

Satellite (source Google Maps®) and ground views of areas with different levels of anthropic disturbance, in Restinga de Jurubatiba National Park, Brazil. A, B: area 1, most disturbed; C, D: area 2, intermediate; D, E: area 3, least disturbed.

Mean number of nematodes in Neoregelia cruenta phytotelma in areas (1-3) with different levels of anthropic disturbance, in Restinga de Jurubatiba National Park, Brazil. For each trophic group, columns marked with the same letter are not significantly different according to the Tukey test at 5%. Numbers in the columns indicate the mean number/standard error of the mean. Values are mean of 64 sampled bromeliads.

Mean number of nematodes in Neoregelia cruenta phytotelma in seasonal samplings in areas (A1-A3) with different levels of anthropic disturbance, in Restinga de Jurubatiba National Park, Brazil. For each sampling, empty columns indicate no significant differences among areas according to the Tukey test at 5%. Different letters indicate significant differences among areas. Numbers in the columns indicate the mean number/standard error of the mean. Values are mean of eight bromeliads sampled per season and per area.

Descriptive statistics of physico–chemical properties of the water retained in Neoregelia cruenta phytotelma, in areas with different levels of anthropic disturbance, in Restinga de Jurubatiba National Park, Brazil_

	Areas
	1^a		2		3
Properties	Mean (min-max)	SD	Mean (min-max)	SD	Mean (min-max)	SD
Temp (°C)^b	21.9 (20-26)	2.1	22.1 (20-26)	2.3	21.1 (20-29)	2.6
DO₂ (mg/L)	5.5 (2.7-8)	1.2	5.6 (3.7-7.4)	0.9	5.7 (3.2-8)	1
DS (mg/L)	64.1 (12-381)	55.1	69.8 (9-284)	54.2	80 (8-247)	56.6
EC (mS/cm)	0.09 (0.02-0.6)	0.08	0.1 (0.01-0.4)	0.08	0.1 (0.01-0.4)	0.08
pH	6.1 (4.1-8.2)	0.8	5.8 (4.5-6.8)	0.6	5.6 (3.5-8.1)	0.7
Vol (mL)	270.6 (25-845)	171.2	271.1 (20-740)	177.1	222.5 (37-910)	157.9
OD (g)	13.4 (0.3-55.8)	12.3	13.5 (1-61.4)	12.4	13.7 (1-51)	10.4
DOC (mg/L)	62.3 (13.2-210.7)	42.8	78.7 (14.9-468.3)	64.8	97.4 (15.9-574)	108.5
N (mg/L)	4.1 (0.1-17.4)	2.9	4.4 (0.1-10.8)	2.7	4.2 (0.1-12.8)	2.9

Mean number of nematodes in Neoregelia cruenta phytotelma in seasonal samplings in areas with different levels of anthropic disturbance, in Restinga de Jurubatiba National Park, Brazil_

Season/year	Area	BF^a	HF	C	Total abundance
Fall/2014	1^b	14.7a	22a	17b	82.1ab
	2	9.9a	18.5a	57a	92.7a
	3	8.9a	5.4b	21.1b	54.2b
Winter/2014	1	2.4a	5.8a	8.9a	31.6b
	2	9.7a	9.6a	14.6a	44.5ab
	3	14.4a	4a	11.5a	64.9a
Spring/2014	1	15.9a	7.2a	14.8a	48a
	2	29.3a	5.8a	7.2a	40.2a
	3	3.8a	4.2a	9.1a	22.9a
Summer/2015	1	22.4a	11.8ab	9.9a	40.9a
	2	7.6b	7.1a	9.2a	34.5a
	3	8.9b	3b	6.8a	25.1a
Fall/2015	1	12.8a	4.5a	8.4a	24a
	2	6.9a	1.5a	6.7a	12.9a
	3	7.3a	0.6a	6.3a	11.3a
Winter/2015	1	24.9a	9.1a	16a	53.9a
	2	11.9b	5.9a	16.1a	35.4a
	3	29.7a	2.7a	12.3a	48.9a
Spring/2015	1	8.5a	6.5a	7.6b	28.7a
	2	7.7a	4.3a	28.1a	41.7a
	3	7.5a	5.3a	10.5b	24.5a
Summer/2016	1	9.3b	3.3a	12.2a	25.4ab
	2	10.4b	2.3a	10.2a	19.6b
	3	27.7a	4.6a	18.2a	55.7a

Description and level of anthropic disturbance in three areas of Restinga de Jurubatiba National Park, Brazila_

	Levels
Description	Area 1	Area 2	Area 3
Removal of vegetation due to road construction	1^b	1	0
Removal of vegetation for the establishment of commercial activities	1	0	0
Removal of vegetation of gardening/landscaping interest	2	1	0
Removal of vegetation for establishment of coconut plantation	2	0	0
Damage to vegetation due to human trampling	2	2	0
Littering on vegetation	2	1	0
Traffic of vehicles in the area	2	1	1
Establishment of housing	2	0	0
Sand removal for building purposes	2	1	0
Sum	16	7	1

ANOVA of nematode abundance in Neoregelia cruenta phytotelma, in areas with different levels of anthropic disturbance, in Restinga de Jurubatiba National Park, Brazil_

Sources of variation	Statistical parameters	Area	Season	Area×season	Error	R ²
Bacterial feeders	MSE^a	123.3	363.3	393.5	94.7	0.5
	p-value	ns^c	***^b	***	–	–
Hyphal feeders	MSE	261.7	162.9	62.8	24.5	0.6
	p-value	***	***	**	–	–
Carnivores	MSE	771.4	570.7	469.7	96.3	0.6
	p-value	***	***	***	–	–
Total abundance	MSE	293.7	3877.7	1266.1	558	0.6
	p-value	ns	***	**	–	–

DOI: https://doi.org/10.21307/jofnem-2020-101 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X

Journal RSS Feed

Language: English

Page range: 1 - 10

Published on: Nov 10, 2020

Published by: Society of Nematologists, Inc.

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

Anthropic disturbance,

Anthropogenic disturbance,

Atlantic forest,

Environmental bioindicator,

Nematode trophic structure,

Tank-forming bromeliad

Related subjects:

Life sciences, other

© 2020 Alexandre Macedo Almeida, Janeo Eustáquio Almeida Filho, Ricardo Moreira Souza, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

Previous article Volume 52 (2020): Issue 1 (January 2020)Next article