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Samira Izidine* & Salomão O. Bandeira† - SABONET

Samira Izidine* & Salomão O. Bandeira† - SABONET

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MOZAMBIQUE<br />

Introduction<br />

<strong>Samira</strong> Izidine * & <strong>Salomão</strong> O. Bandeira †<br />

Mozambique is located on the southeast<br />

coast of southern Africa (between 10°27’S<br />

and 26°52’S, and 30°52’E, 30°12’E and<br />

41°51’E). The country occupies an area of<br />

approximately 800,000 km 2 . It shares common<br />

borders with Tanzania in the north,<br />

Malawi, Zambia, and Zimbabwe in the<br />

west, and South Africa in the south. The<br />

Indian Ocean coastline of Mozambique is<br />

over 2,700 km in length.<br />

The flora of Mozambique is characterised<br />

by miombo and mopane woodlands,<br />

grasslands, mangroves, and coastal mosaics<br />

(Wild & Barbosa 1967, White 1983).<br />

With 5,692 species of higher plants currently<br />

recorded for Mozambique, it is believed<br />

that some of these species are under<br />

pressure from human activity and natural<br />

causes. At total of 2,676 km 2 lies within protected<br />

areas, representing 11% of the country<br />

(Bandeira et al. 1994).<br />

Two main centres of endemism occur in<br />

Mozambique: Maputaland in the south—<br />

which includes areas in South Africa and<br />

Swaziland—and Chimanimani that is<br />

shared between Zimbabwe and central<br />

Mozambique (Hatton & Munguambe<br />

1998). Consequently, some plant species<br />

that occur in these centres of endemism<br />

and are listed as endemic, could well be<br />

near-endemic (and vice versa). Endemic<br />

species whose distribution ranges are dubious<br />

include Hexalobus mossambicensis<br />

and Xylopia torrei; examples of those sceptically<br />

considered near-endemic include<br />

Pseudosbeckia swynnertonii and Anthospermum<br />

ammannioides. Most of the botanical<br />

inventories undertaken in Mozambique<br />

have been conducted mainly in the south<br />

of the country; the centre and north have<br />

been less well documented.<br />

High population densities in towns, however,<br />

in conjunction with poverty-stricken<br />

conditions, stimulate forest and savanna<br />

depletion for fuelwood requirements; this<br />

has been the major cause of forest and savanna<br />

degradation in Mozambique. Deforestation<br />

rates reach up to 147,077 ha per<br />

year. Mangroves, one of main vegetation<br />

types in coastal Mozambique, are being<br />

subjected to deforestation at a rate of<br />

1,821 ha per year (Barbosa et al. 2001);<br />

mangrove degradation is particularly high<br />

in the rapidly expanding cities of Maputo<br />

and Beira. Other causes for the loss of species<br />

are traditional agricultural practices,<br />

monoculture systems, and unsustainable<br />

development.<br />

A Red Data List for Mozambique is therefore<br />

a necessity to identify species at risk of<br />

extinction, and can assist in defining priorities,<br />

strategies, and actions towards their<br />

conservation.<br />

Table 1. Number of taxa in each RDL category in Mozambique.<br />

RDL status Number of taxa<br />

Extinct (EX)1<br />

Critically Endangered (CR)6<br />

Endangered (EN)6<br />

Vulnerable (VU)109<br />

Lower-Risk near threatened (LR-nt)16<br />

Lower-Risk least concern (LR-lc)23<br />

Data Deficient (DD)139<br />

Total 300<br />

*National Institute of Agronomic Research, LMA Herbarium, Maputo, Mozambique<br />

†Eduardo Mondlane University, Botany Department, LMU Herbarium, Maputo, Mozambique<br />

Capital: Maputo, largest city and<br />

port<br />

Area: 801,590 km 2<br />

Languages: Portuguese (official),<br />

Macua, Ndau, Tsonga, Maconde,<br />

Swahili<br />

Currency: Meticais (MT)<br />

Total plant species: 5,692<br />

Total plant endemics: 177<br />

Total RDL plants: 300<br />

Focal RDL institutions: LMA, LMU<br />

Number of Protected Areas: four<br />

National Parks, five Game Reserves,<br />

Coutadas (“Official Hunting Areas”),<br />

one Transfrontier Park (Mozambique–South<br />

Africa–Zimbabwe), and<br />

several other proposed protected<br />

areas (including Transfrontier Parks)<br />

Population: 17,299,000 Growth<br />

Rate: 1.9% Density: 21.2 people/<br />

km 2<br />

Phytogeography: Predominantly<br />

Zambezian, with Afromontane elements<br />

at higher altitudes. There is<br />

a broad belt of Zanzibar–Inhambane<br />

Regional Mosaic along the entire<br />

coastline and interior river valleys<br />

in the north except for a small area<br />

of Tonga–Pondoland Regional Mosaic<br />

in the extreme south.<br />

Flora: Mainly miombo woodland,<br />

with mopane woodland in the Zambezi<br />

and Limpopo Valleys. Montane<br />

forests and grasslands found at<br />

higher elevations. Mosaic of coastal<br />

woodlands, as well as forest/mangrove<br />

patches.<br />

Sources: Anonymous 2000,<br />

Bandeira, Hatton, Munisse & Izidine<br />

1994, Stuart & Adams 1990, White<br />

1983<br />

43<br />

MOZAMBIQUE


MOZAMBIQUE<br />

Table 2. Families containing the<br />

highest numbers of RDL species.<br />

Family Number of species<br />

Rubiaceae 26<br />

Fabaceae 20<br />

Euphorbiaceae 15<br />

Zamiaceae 13<br />

Table 3. Endemism on the RDL for<br />

Mozambique.<br />

Endemism Number<br />

of taxa<br />

Confirmed endemic 166<br />

Suspected endemic 11<br />

Confirmed near-endemic 60<br />

Suspected near-endemic 17<br />

Total 254<br />

Methods<br />

Information Synthesis<br />

During the first phase of RDL compilation,<br />

information regarding threatened plant<br />

species or those potentially at risk of extinction<br />

was synthesised. Data were gleaned<br />

from lists by Bandeira et al. (1994), Van<br />

Wyk (1996), Hatton & Munguambe<br />

(1998), Oldfield et al. (1998), and Walter &<br />

Gillett (1998). These lists tended to concentrate<br />

on endemic, medicinal, and woody<br />

species.<br />

After the compilation of the draft list, a Red<br />

Data List workshop was held in Maputo<br />

from 23 to 27 October 2000. Participants<br />

were trained in the use of the IUCN criteria<br />

and categories (IUCN 1994). Flora de<br />

Moçambique and Flora Zambeziaca were<br />

used to refine the preliminary list of species<br />

that merited Red List status. Additional<br />

information on some of the better known<br />

plant species from southern Mozambique<br />

was obtained from field observations by<br />

botanists. Herbarium specimen information<br />

from LMA and LMU was used to identify<br />

additional species localities, but was<br />

subsequently found to be of extremely limited<br />

value. Vegetation maps were used to<br />

determine the distribution of habitats in<br />

which the Red Listed species occur and<br />

were also used to estimate threats.<br />

We attempted to estimate distribution<br />

ranges (Extent of Occurrence and Area of<br />

Occupancy) but data were so unreliable<br />

(taxonomically), sparse, and outdated, and<br />

revealed so little about the threats in the<br />

habitats of many species, that it became<br />

extremely difficult to make assumptions<br />

and inferences.<br />

44<br />

Red List evaluations were done for species<br />

falling into the following categories:<br />

• Species endemic or near-endemic to<br />

Mozambique<br />

• Species restricted to small areas or limited<br />

habitats<br />

• Utilised taxa (timber, medicinal, and<br />

ornamental purposes)<br />

• Taxa in close proximity to high impact<br />

areas (settlement areas, agricultural and<br />

industrial developments)<br />

Application of the Red Data List<br />

Categories<br />

The IUCN (1994) Red List categories and<br />

criteria were applied, based on evidence<br />

concerning numbers, trends in disappearance,<br />

and the distribution of taxa. Factors<br />

such as population pressure on a species,<br />

proximity to human settlements, and agricultural<br />

and industrial activities were taken<br />

into consideration. For example, if a species<br />

occurs near human settlements or agricultural<br />

and industrial activities, then it<br />

is more likely to be lost.<br />

The Vulnerable D2 category was applied<br />

judiciously in cases where species were<br />

found only in type localities, the distribution<br />

range was likely to be narrow, and if<br />

threats were known. The Data Deficient category<br />

was applied in cases where species<br />

were known only from the type collection<br />

or from a single locality and where no information<br />

regarding threats was available.<br />

The threatened categories (Critically Endangered,<br />

Endangered and Vulnerable) were<br />

applied when the risk of extinction was<br />

certain and known to be high. Only in a<br />

few exceptional cases—for example, Raphia<br />

australis and the 13 Encephalartos species<br />

recorded for Mozambique—was complete<br />

information available, that is, throughout<br />

the entire distribution range for the species<br />

concerned.<br />

Results and Discussion<br />

Red Data List<br />

Some species found in the RDL presented<br />

here occur in previous, very prominent<br />

publications; the World List of Threatened<br />

Trees (Oldfield et al. 1998) listed 78 species<br />

and the 1997 IUCN Red List of Threatened<br />

Plants (Walter & Gillett 1998) listed 89 vascular<br />

plants (including trees) for Mozambique.<br />

In addition, several near-endemic<br />

species that occur in Mozambique were<br />

listed in Hilton-Taylor (1996) in the RDLs<br />

for Swaziland (Lebombo Mountains) and<br />

South Africa (Maputaland).<br />

Some 300 species, by contrast, are listed in<br />

the list presented here. Of these, 122 are<br />

listed as Critically Endangered (CR), Endangered<br />

(EN), and Vulnerable (VU). Many<br />

species (139) have, however, been categorised<br />

as Data Deficient (DD). Virtually all<br />

of the DD species are known from only one<br />

or a few herbarium collections, with very<br />

sparse and irrelevant information on the<br />

specimen labels. Many species, moreover,<br />

are not properly identified or possess uncertain<br />

taxonomic identification.<br />

In addition, the fact that few inventories<br />

were compiled for the interior and north<br />

of Mozambique, led to a far higher representation<br />

of southerly distributed plants on<br />

the Red Data List.<br />

Certain plant species like Dombeya cymosa,<br />

Carpodiptera africana, Corchorus junodii,<br />

and Grewia glandulosa, which were represented<br />

in previous Red Data Lists, have<br />

been excluded from this List. This is partially<br />

because the IUCN (1994) categories<br />

take into account quantitative data and exclude<br />

these species as candidates for a Red Data<br />

List owing to their abundance in the wild.<br />

With regard to plant families on the Red<br />

Data List, the Rubiaceae, Fabaceae<br />

(Leguminosae), and Euphorbiaceae are<br />

well-represented compared to other families<br />

(Table 2); this was an expected result,<br />

as these families are well-studied. The<br />

Orchidaceae of Mozambique, on the other<br />

hand, have been relatively poorly studied<br />

and are poorly represented because of a lack<br />

of field information. For example, Eulophia<br />

biloba is known only from a single specimen<br />

that was collected in 1895 near Beira,<br />

which today is a large coastal town. There<br />

are several similar examples from the<br />

Orchidaceae: Eulophia bissacata, Disperis<br />

mozambicense, Habenaria mossambicensis,<br />

and Liparis hemipiloides. Similarly, little is<br />

understood about the Poaceae of Mozambique,<br />

as many species are known only<br />

from a specific location; this may be an artefact<br />

resulting from the general unpopularity<br />

of collecting grasses. Furthermore,<br />

many grasses particularly from the coastal<br />

areas, may have been introduced from<br />

other countries—the Mozambique coastline<br />

has hundreds of years of trade history<br />

with neighbouring countries on the African<br />

mainland and the surrounding islands.<br />

Some 177 endemic species appear on the<br />

List (Table 3)—these endemics are found<br />

mainly in the Maputaland zone and the<br />

Chimanimanis. Some taxa have been listed<br />

as near-endemic (77 species), as they are


also found in South Africa, Swaziland, Tanzania,<br />

and Zimbabwe. It is, however, suspected<br />

that Mozambique possesses many<br />

more range-restricted species, especially in<br />

the north of the country. More inventories<br />

and field explorations are recommended<br />

in the northern countryside, as many species<br />

are likely to be shared across the<br />

Rovuma River and other political boundaries<br />

with Tanzania, presenting opportunities<br />

for collaborative field research.<br />

Useful and Threatened Species<br />

As in most other southern African countries,<br />

timber, medicinal, edible, and ornamental<br />

species are the most important<br />

groups of plant used in Mozambique. Close<br />

to 70% of the Mozambican population uses<br />

medicinal plants for basic healthcare<br />

(World Conservation Monitoring Centre<br />

1992); urban markets in Maputo and Beira<br />

sell medicinal plants derived from many<br />

parts of the country.<br />

In general, all utilised plants should be<br />

monitored, as they may be eligible for Red<br />

Lists, and their depletion will undoubtedly<br />

have serious socio-economic consequences.<br />

Timber species that were included<br />

in this List, such as Milicia excelsa (LR-nt)<br />

and Afzelia quanzensis (LR-nt), should be<br />

monitored. Medicinal plants such as<br />

Warburgia salutaris (VU A2cd), used for<br />

alleviating throat complaints (Bandeira et<br />

al., in press), should also be monitored.<br />

Species of Encephalartos are believed to be<br />

illegally exported for use as ornamental<br />

plants, mainly to neighbouring countries.<br />

The major threats to plant species in Mozambique<br />

are related to uses of a non-sustainable<br />

nature and include:<br />

• Heavy exploitation of natural resources<br />

for fuelwood<br />

• Industrial development<br />

• Traditional agricultural practices<br />

• Human settlements and urbanisation<br />

The most sensitive ecosystem zones include<br />

coastal areas and the areas surrounding<br />

main towns, owing to high population densities.<br />

In poverty-stricken areas, the main<br />

threat is deforestation for fuelwood and<br />

charcoal. Commercial deforestation takes<br />

place mainly in south-central Mozambique<br />

and in mangrove areas where there is a high<br />

abundance of woody tree species whereas<br />

industrial development and urbanisation<br />

are very high in Maputo and Sofala Provinces.<br />

In addition, destructive agricultural<br />

practices take place on a large scale, mainly<br />

in rural areas.<br />

Inhamitanga Forest in pristine condition. (Photo: J. Burrows)<br />

Inhamitanga Forest—the trail of destruction. (Photo: J. Burrows)<br />

Conclusions and<br />

Recommendations<br />

While compiling this List, several constraints<br />

were encountered: these range from<br />

a lack of information to the lack of a national<br />

checklist and incomplete and outdated<br />

information. We found that herbarium<br />

specimen information is an inadequate<br />

basis for determining Red Data List<br />

status for the plant species of Mozambique.<br />

Our knowledge of the flora of Mozambique<br />

is mostly restricted to southern Mozambique<br />

and field exploration in northern and<br />

central Mozambique is needed to update<br />

scientific information, as well as to increase<br />

the numbers of herbarium collections.<br />

Gathering information on endemics and<br />

near-endemics is especially important.<br />

Collaboration with neighbouring countries<br />

(Malawi, South Africa, Swaziland, Tanzania,<br />

and Zimbabwe) and sharing of expertise<br />

are important elements that can assist<br />

in the compilation of botanical inventories.<br />

These inventories will form a basis for directly<br />

assisting in national conservation<br />

planning, sustainable resource utilisation<br />

strategies, and further research priorities.<br />

Acknowledgements We would like to express<br />

our sincere gratitude to the Red Data List National<br />

Working Group: Filomena Barbosa,<br />

Angelina Martins, Ana Bela Amude, Carla<br />

Ruas, Eduardo Massingue, Felisbela Gaspar,<br />

Silva Mulhovo, Köeti Seródio, Catarina<br />

Chidiamassamba, Maria da Luz Dai, and<br />

Agostinho Lisboa. Our thanks are extended<br />

to Janice Golding and Peter Phillipson who<br />

compiled and edited the Red Data List assessments.<br />

Marta Monjane and Paul Dutton,<br />

staff of Kew Herbarium (K), and anyone who<br />

directly or indirectly contributed to this work<br />

are also thanked.<br />

45<br />

MOZAMBIQUE

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